ZXWM M920 (V4. 10) Product Description
ZXWM M920 Product Description
ZXWM M920 Product Description Version
Date
Author
Approved By
Remarks
R1.0
Feb.,6,2009
Fang Huanhuan
Xia Yan
Not open to the Third Party
2009 ZTE Corporation. All ri ghts reserved.
ZTE CONFIDENTIAL: This CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used without the prior written permission of ZTE. Due to update and improvement of ZTE products and technologies, information in this document is subjected to change without notice.
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reserved. 2009 ZTE Corporation. All rights reserved.
I
ZXWM M920 Product Description
TABLE OF CONTENTS 1
Overview ...................... ......................... ......................... ......................... ............... 1
2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11
Highlight Features ...................... ......................... ......................... ......................... 2 Large Capacity and Easy Upgrade ........................ ......................... ......................... 2 Single 40Gbit/s system........................................ ......................... ......................... .. 3 Super-long-haul Transmission........................... ......................... ......................... .... 3 Multi-service Access Mode ......................... ......................... ......................... ........... 3 Flexible networking modes ........................ ......................... ......................... ............ 4 Wavelength Add/Drop Functions ...................... ......................... ......................... ..... 4 Reliable Protection Functions ...................... ......................... ......................... .......... 4 Performance Monitoring Technologies....................................... ......................... ..... 4 Power Management Technology ......................... ......................... ......................... .. 4 Powerful NM ........................................................................................................... 5 WSON .................................................................................................................... 5
3 3.1 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 3.1.7 3.1.8 3.1.9 3.1.10 3.1.11 3.1.12 3.1.13 3.1.14 3.1.15 3.1.16 3.1.17 3.1.18 3.1.19 3.2 3.2.1 3.2.2 3.3
Functionality ......................... ......................... ......................... ......................... ...... 5 Functions ...................... ......................... ......................... ......................... ............... 6 Large Transmission Capacity ......................... ......................... ........................ ........ 6 Ultra-long-haul Distance Optical Source ......................... ......................... ................ 6 Optical Amplifier ......................... ......................... ......................... ......................... .. 7 Power Management ........................ ......................... ......................... ...................... 8 Performance Detection Function.......................................... ......................... ........... 9 OTN Description.................................. ......................... ......................... ................ 10 Dispersion Management......................... ......................... ......................... ............. 15 Service Functions....................... ......................... ......................... ......................... 15 Wavelength Add/Drop Function....................... ......................... ......................... .... 16 Communication and Monitoring Functions ...................... ......................... .............. 16 Alarm Input/Output Function....................................... ......................... .................. 17 System Level Protection............................... ......................... ......................... ....... 17 Network level Protection................................. ......................... ......................... ..... 18 Network management channel backup ....................... ......................... .................. 21 Supervision Subsystem...................... ......................... ........................ .................. 22 L0/L1/L2 integrated transport technologies ...................... ......................... ............. 23 ROADM Function ...................... ......................... ......................... ......................... . 24 Electrical Cross-Connect Function..................................... ......................... ........... 25 Wavelength Tuning Function ...................... ......................... ......................... ......... 26 Networking........................ ........................ ......................... ......................... .......... 27 System Applications ....................... ......................... ......................... ..................... 27 Networking Modes................................ ........................ ......................... ................ 32 Transmission Codes Supported................... ......................... ......................... ........ 34
4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.2 4.2.1 4.2.2
System Architecture ......................... ......................... ......................... ................. 37 Description of System Functional Platform......................... ......................... ........... 37 Optical transfer platform ...................... ......................... ......................... ................ 38 Service convergent platform ....................... ......................... ......................... ......... 38 OM/OD platform........................ ......................... ......................... ......................... . 39 Add/drop platform................................ ......................... ......................... ................ 39 Optical amplifying platform ........................ ......................... ......................... .......... 39 Monitoring platform................................... ......................... ......................... ........... 39 Hardware Architecture............... ......................... ......................... ......................... . 40 Sub-rack ............................................................................................................... 40 Board Description..................... ......................... ......................... ......................... .. 40
II
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ZXWM M920 Product Description
4.3 4.3.1 4.3.2 4.4 4.4.1 4.4.2 4.4.3
The NM Software System Structure.......................... ......................... .................... 44 Hierarchical structure ............................................................................................ 45 2Interface description...................................... ......................... ........................ .. 46 System Configuration ......................... ......................... ......................... ................. 47 Optical Terminal Multiplexer (OTM) ........................ ......................... ...................... 47 Optical Add/Drop Multiplexer (OADM) ........................ ......................... .................. 47 Optical Line Amplifier (OLA) ....................... ......................... ......................... ......... 50
5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.13.1 5.13.2 5.13.3 5.14 5.14.1 5.14.2 5.14.3 5.14.4 5.14.5 5.14.6 5.14.7 5.14.8 5.15 5.15.1 5.15.2
Technical Specifications ...................... ......................... ......................... ............. 51 Working Wavelength Requirements................................ ......................... .............. 51 System Component Indices............................ ......................... ......................... ..... 59 OMU/ODU Performance Parameters........................... ......................... ................. 61 WSUA/WSUD & WBU Performance Parameters ....................... ......................... ... 67 OADM Performance Parameters ....................... ......................... ......................... .. 69 OA Parameters ...................... ......................... ......................... ......................... .... 69 OTU Interface Indices.......................................... ......................... ......................... 84 Tributary overhead processing of convergence board................. ......................... .. 94 Service Convergence parameters......................................... ......................... ........ 95 OS Channel (SOSC) Performance Indices ...................... ......................... ........... 108 Supervision interfaces indices ...................... ......................... ......................... ..... 108 Dispersion compensation parameters................... ......................... ...................... 109 Physical Performance....................................... ......................... ......................... . 109 Structure Indices ......................... ......................... ......................... ...................... 109 Bearing Requirements of the Equipment Room ....................... ........................ .... 110 Power Supply Indices........................ ......................... ......................... ................ 110 Environment Conditions ...................................................................................... 112 Grounding Requirements...................... ......................... ......................... ............. 112 Temperature and Humidity Requirements................................... ........................ . 113 Requirements for Cleanness ........................ ........................ ......................... ...... 113 Dustproof and Corrosion-Proof Requirements ....................... ......................... ..... 114 Environment for Storage....................... ......................... ......................... ............. 114 Environment for Transportation ........................ ......................... ......................... . 114 Electronic Static Discharge (ESD) ....................... ......................... ....................... 115 Safety requirements ....................... ......................... ......................... ................... 117 Introduction to Interfaces ....................... ......................... ......................... ............ 119 Interface on SEIA board ......................... ......................... ......................... ........... 119 Interface on SPWA board............................. ........................ ......................... ...... 122
6
Appendix A Abbreviation ........................ ......................... ......................... ........ 124
7
Appendix B Followed Standards and Recommendations ........................ ....... 127
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III
ZXWM M920 Product Description
FIGURES Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40
!
Rack Diagram of Unitrans ZXWM M920................................ ......................... .......... 1 ZTE"s New-Generation Digital Transmission Product Family......................... ............. 2 Principles of RA....................... ......................... ......................... ......................... ....... 7 Power management sub-system......................................... ......................... .............. 9 OTN description ....................... ......................... ......................... ......................... .... 10 OTN section....................... ......................... ......................... ......................... .......... 11 Interconnection at SDH level ...................... ......................... ......................... ........... 12 Explanation of SM byte................................... ......................... ......................... ....... 12 Dispersion management.......................... ......................... ......................... .............. 15 The Block Diagram of Optical Path 1: N Protection Function.................................... 18 Optical Path Layer 1+1 Protection (Chain Networking)............................ ................. 19 Ring Networking................................... ......................... ......................... ................. 19 Functional Block Diagram for MS 1+1 Protection ....................... ......................... ..... 20 Schematic diagram of 2-fiber bidirectional path shared protection.......................... .. 21 Network management through supervisory channel....................................... .......... 22 Network management through backup supervisory channel..................................... 22 The position of supervision subsystem ....................... ......................... .................... 23 Electrical Cross-Connect System Structural Diagram............................ ................... 25 Whole Network Application with the ZXWM M920 (the System less than 48Wavelength)..................................... ......................... ......................... ..................... 27 Whole Network Application with the ZXWM M920 (the System with 80/96Wavelength)..................................... ......................... ......................... ..................... 28 Whole Network Application with the ZXWM M920 (160/176- Wavelength) ............... 29 Whole Network Application with the ZXWM M920 (the System with 192-Wavelength)31 Point-to-Point Networking (Short-Haul) ....................... ......................... .................... 32 Point-to-Point Networking (Long-Haul)....................... ......................... ..................... 32 Application of Chain Networking ........................ ......................... ......................... .... 33 Application of Ring Networking ......................... ......................... ......................... ..... 33 Ring-with-Chain Networking ......................... ......................... ......................... ......... 34 Cross Connection Networking ...................... ......................... ......................... ......... 34 Functional Blocks of the ZXWM M920 ......................... ......................... ................... 38 Board Slot Arrangement of OTU Sub-rack ...................... ......................... ................ 40 The Hierarchical Structure of the Element Management Software............................ 45 Functional Blocks of the OTM.......................................... ......................... ............... 47 Functional Blocks of the FOADM............................... ......................... ..................... 48 Optical Connection of ROADM Equipment with WBU Boards................................... 49 Optical Connection of ROADM Equipment with WBM Boards ......................... ......... 49 Optical Connection of ROADM Equipment with WSU Boards................................... 50 Functional Blocks of the OLA.................................. ......................... ........................ 50 Schematic Diagram of the DWDM System.................................. ......................... .... 60 Common Interface Area of the OTU Sub-rack..................................... ................... 119 Interfaces on the SPWA board ....................... ........................ ......................... ...... 122
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ZXWM M920 Product Description
TABLES Table 1 Table 2 Table 3 Table 4 Table 5 Table 6
Characteristics of dual/single pump source.............................. ......................... ......... 7 The application modes ........................ ......................... ......................... .................. 14 Functions of board in supervision subsystem....................................... .................... 22 ZTE Networking Scheme And Application Environment ........................................... 24 ZTE/ ROADM Solutions............................. ......................... ......................... ............ 24 Boards Supporting Wavelength Tuning Function ....................... ......................... ..... 27
Table 7 Table 8 Table 9
The Transmission Codes Supported by 40 ×2.5 Gbit/s System ................................ 35 The Transmission Codes Supported by 40 /48× 10 Gbit/s System ........................... 35 The Transmission Codes Supported by 80/96 × 10 Gbit/s System ........................... 36
Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16
The Transmission Codes Supported by 192 × 10 Gbit/s System .............................. 36 The Transmission Codes Supported by 40/48 × 40 Gbit/s System ........................... 36 The Transmission Codes Supported by 80/96 × 40 Gbit/s System ........................... 37 Board Description................... ......................... ......................... ......................... ...... 40 The Wavelength Allocation based on C band 40 CH/100 GHz Spacing.................... 51 The Wavelength Allocation based on C/C+ band 192 CH/ 25 GHz Spacing ............. 52 The Wavelength Allocation based on C/C+ band 48/96 CH/100 GHz/50 GHz Spacing....................................... ......................... ......................... ......................... . 55 The Wavelength Allocation based on C/C+ band 80 CH/100 GHz Spacing .............. 57 The Wavelength Allocation based on L/L+ band 80 CH/100 GHz Spacing ............... 58 Meaning of Components and Interfaces of the DWDM System ...................... .......... 60 OMU Performance Parameters ...................... ......................... ......................... ....... 61 The VMUX Performance Parameters....................................... ......................... ....... 62 ODU Performance Parameters....................................... ......................... ................ 62 50 GHz / 100 GHz Inter-leaver Performance Parameters................................ ......... 63 25 GHz /50 GHz Inter-leaver Performance Parameters......................... ................... 64 C/L Band OMU/ODU Performance Parameters ...................... ......................... ........ 64 ODU80 & OMU40!coupler "Performance Parameters .......................................... 65 The performance parameters of PDU-4-X are listed in following table........... ........... 65 The performance parameters of PDU-5-X are listed in following table........... ........... 66 The performance parameters of PDU-8-X are listed in following table........... ........... 66 The performance parameters of PDU-9-X are listed in following table........... ........... 66 The performance parameters of PDU-16-X are listed in following table.................... 67 WBU Performance Parameters ........................ ......................... ......................... ..... 67 WSUA/WSUD Performance Parameters.................................... ......................... ..... 68 WBM Performance Parameters ........................ ......................... ......................... ..... 68 OADM Performance Parameters ...................... ......................... ......................... ..... 69 C/L band EOBA Performance Parameters of the 40-channel ...................... ............. 70 C/L band EOBA Performance Parameters of the 80-channel ...................... ............. 71 C band EOBA Performance Parameters of the 48-channel.......................... ............ 72 C band EOBA Performance Parameters of the 96-channel.......................... ............ 73 EOLA Performance Parameters of the 40/80-channel System ...................... ........... 74 Optical Preamplifier Performance Parameters of the 40-channel System................. 76 Optical Preamplifier Performance Parameters of the 80-channel System................. 77 Optical Preamplifier Performance Parameters of the 48-channel System................. 78
Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Table 37 Table 38 Table 39 Table 40 Table 41 Table 42 Table 43
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ZXWM M920 Product Description
Table 44 Table 45 Table 46 Table 47 Table 48 Table 49 Table 50 Table 51 Table 52 Table 53 Table 54 Table 55 Table 56 Table 57 Table 58 Table 59 Table 60 Table 61 Table 62 Table 63 Table 64 Table 65 Table 66 Table 67 Table 68 Table 69 Table 70 Table 71 Table 72 Table 73 Table 74 Table 75 Table 76 Table 77 Table 78 Table 79 Table 80 Table 81 Table 82 Table 83 Table 84 Table 85 Table 86 Table 87 Table 88
Optical Preamplifier Performance Parameters of the 96-channel System................. 79 EONA Performance Parameters of the 40/80-channel System................................. 80 EONA Performance Parameters of the 48/96-channel System................................. 81 Performance Parameters of EDFA+RAMAN Amplifier ......................... .................... 83 Performance Parameters of RAMAN amplifier .............................................. ........... 83 Performance Parameters of RPOA amplifier...................... ......................... ............. 84 The Interface Indices of 2.5 Gbit/s OTU at the Transmitting End of the ZXWM M920 84 The Interface Indices of 2.5 Gbit/s OTU for the Regenerator.............. ...................... 85 The Interface Indices of 2.5 Gbit/s OTU at the Receiving End of the ZXWM M920 ... 86 The Interface Indices of 10 Gbit/s OTU at the Transmitting End of the ZXWM M920 86 The Interface Indices of 10 Gbit/s OTU for the Regenerator................................... .. 87 The Interface Indices of 10 Gbit/s OTU at the Receiving End....................... ............ 88 The Interface Indices of 40 Gbit/s OTU(DPSK) at the Transmitting End of ZXWM M920........................... ......................... ......................... ......................... ................. 89 The Interface Indices of 40 Gbit/s OTU(DPSK) for the Regenerator ......................... 90 The Interface Indices of 40 Gbit/s OTU(DPSK) at the Receiving End....................... 91 The Interface Indices of 40 Gbit/s OUT (DQPSK) at the Transmitting End of ZXWM M920........................... ......................... ......................... ......................... ................. 92 The Interface Indices of 40 Gbit/s OUT(DQPSK) for the Regenerator.................... 92 The Interface Indices of 40 Gbit/s OTU (DQPSK) at the receiving End............ ......... 93 Tributary overhead processing of convergence board.................... ......................... . 94 The parameters of SRM41 ...................... ......................... ......................... .............. 95 Specification of SRM42 Board....................... ......................... ......................... ........ 97 The parameters of MQT3(DPSK)............................. ......................... .................... 98 The parameters of MQT3 !DQPSK"............................................................... 100 Specification of GEM2/GEMF Board....................................... ......................... ...... 101 Specification of GEM8 Board......................... ......................... ......................... ...... 102 Specification of DSA Board ........................ ......................... ......................... ......... 103 Specification of DSAF Board ....................... ......................... ......................... ........ 104 Specification of DSAE Board ......................... ......................... ......................... ...... 105 Specification of SMU Board................................... ........................ ........................ 106 Specification of FCA Board ....................... ......................... ......................... ........ 107 Main Performance Indices of SOSC ......................... ......................... .................... 108 Functions and parameters of supervision interface at boards................................. 108 Parameters of dispersion compensation equipment......................... ...................... 109 Dimensions and Weight of ZXWM M920................................. ......................... ...... 109 Power Consumption of Commonly Used Boards/Units of ZXWM M920.................. 110 Temperature and Humidity Requirements..................................... ......................... 113 Requirements for Harmful Gases in the Equipment Room ....................... .............. 113 Climate requirement........................ ......................... ......................... .................... 114 Requirements for mechanical stress....................... ......................... ...................... 114 Climate requirement........................ ......................... ......................... .................... 115 Static discharge anti-interference...................................... ......................... ............ 115 RF electromagnetic radiated susceptibility ...................... ......................... .............. 115 Electrical fast transient burst susceptibility at the DC power port ....................... ..... 115 Electrical fast transient burst susceptibilities at the signal cable and control cable ports........................ ......................... ......................... ......................... ................... 116 Surge susceptibility of DC power ...................... ......................... ......................... ... 116
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ZXWM M920 Product Description
Table 89 Table 90 Table 91 Table 92 Table 93 Table 94 Table 95 Table 96
Surge susceptibility of the outdoor signal cable.................. ......................... ........... 116 Surge susceptibility of the indoor signal cable.............................. ......................... . 116 Conductivity susceptibility of RF field........................ ......................... .................... 116 Conductive emission electromagnetic interference at the direct current port........... 117 Radio active emission electromagnetic interference..................... ......................... . 117 Definitions and Description for the Common Interface on SEIA1........................ .... 120 Definitions and Description for the Common Interface on SEIA2........................ .... 121 Definitions and Description for the Common Interface on SPWA.......................... .. 123
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VII
ZXWM M920 Product Description
1
Overview Unitrans ZXWM M920 Dense W avelength Division Multiplexing Optical Transmission Equipment is a large-capacity ultra-long-haul transmission system. It can multiplex up to 192 wavelengths (uni-direction) in a single-core fiber, with total transmission capacity of 1920Gb/s in 10G system and 3840Gb/s in 40G system. It offers full-rate optical access capability from STM-1/OC-3 to STM-256/OC-768, as well as complete access capability for other services, such as POS, ATM, GbE and PDH. ZXWM M920 rack i s illustrated in Figure 1. Figure 1
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Rack Diagram of Unitrans ZXWM M920
Based on the development idea of #creating free, powerful and scalable optical transmission networks$, ZTE develops its new-generation of digital transmission products including Unitrans ZXWM M920 DWDM equipment which provides large bandwidth and
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ZXWM M920 Product Description
long-haul transmission at the backbone layer, ZXMP M820 DWDM equipment, ZXMP M720 DWDM equipment, ZXMP M600 CWDM equipment. The new-generation digital transmission products of ZTE can satisfy all applications from the backbone network to end user access, and provide users with future-oriented overall transmission solutions.Figuer2 shows the applications of ZTE"s optical transmission products. Figure 2
ZTE"s New-Generation Digital Transmission Product Family
M920
M920
M920
DWDM/ROADM
Backbone
M920
Backbone Layer GSR
M820
RNC
M820
GSR
DWDM/ROADM
Metro Core
M720
M720
BRAS
M720 M600 M600
CWDM
M720
M600
M600
DWDM
M720
M720
Broad
Triple
PSTN
Metro Edge
Node B B
ZXWM M920 is mainly applied to the national backbones and provincial backbones.
2
Highlight Features This chapter introduces the salient features of ZXWM M920.
2.1
Large Capacity and Easy Upgrade ZXWM M920 can provide 1920/3840 Gbit/s transmission capacity, fully satisfying the ever-growing requirements on bandwidth. The system is designed with modular structure and multi-rack management technology. It can be smoothly upgraded to 192-wavelength. Its good scalability and expansibility can protect user "s investment maximally
2
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2.2
Single 40Gbit/s system ZXWM M920 can supports single 40Gbit/s system, and has f ollowing features: 1
Support 96 wavelengths
Support 80/96*40G transmission and the capacity of at most 3.84T; 2
P-DPSK and RZ-DQPSK modulation for ULH transmission
Improved DPSK coding has good OSNR tolerance and can restrain the non-linear effect well. It can reach 1500KM without the REG with 50GHZ spacing. RZ-DQPSK coding has good PMD tolerance and can restrain the non-linear effect well. It can reach 2000KM without the REG with 50GHZ spacing. 3
Embedded TODC and EDFA and the same dispersion tolerance & power budget as 10G system.
OTU board is embedded with TODC and EDFA, the system allows the biggest dispersion tolerance of -700ps/nm ~+700ps/nm, and the dispersion tolerance & power budget are the same as 10G system. 4
Ultra high integration
40G board only needs 2 slots, with high integration and low power consumption. Single rack supports 21%40G wavelengths. 5
Smooth network upgrade
The 40G board can plug and play in the legacy equipment because the system is developed on the existing WDM platform. It supports smooth upgrade from 10G to 40G without any service interruption.
2.3
Super-long-haul Transmission With different optical transponder units (OTU), EDFA, FEC and AFEC technologies, RZ coding technology, P-DPSK coding technology, distributed Raman amplifier and dispersion management technology, ZXWM M920 can perform super long non-electric relay transmission from several kilometers up to thousands of kilometers.
2.4
Multi-service Access Mode ZXWM M920 adopts an open design. The accessed optical signals can be converted to ITU-T G.692 recommendation compliant wavelength signals for output by employing optical/electric/optical conversion technology. It supports transparent transmission of optical signals in multiple f ormats, such as STM-N (N=1, 4, 16, 64,256), POS, GbE/10GE, ATM, ESCON, FICON and FC, which protect users" benefit and provide an ideal means for network expansion.
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ZXWM M920 Product Description
ZXWM M920 also can multiplex low-rate services into 40G10G or 2.5G rates transparently to improve the availability of system wavelength.
2.5
Flexible networking modes Functionality of ZXWM M920 can be changed from OLA to OADM to OTM by choosing different combination of functional modules, making i t more flexible for complicated network topologies, such as chain, star, cross, tangent-ring and m esh networks.
2.6
Wavelength Add/Drop Functions Filters in the ZXWM M920 can be configured flexibly to implement the adding/dropping of 1 to 80 wavelengths. With this kind of design, the ZXWM M920 supports both the FOADM and the ROADM functions. FOADM: This function is to implement the adding/dropping of fixed wavelengths. ROADM: With this function, wavelengths to be added/dropped can be reconfigured. Besides, add/drop ports can be assigned to these wavelengths flexibly, that is, the port assignment function. ZXWM M920 support ROADM function based on WB, PLC and WSS technologies.
2.7
Reliable Protection Functions ZXWM M920 can provide multi ple and effective protection modes: Optical subnet connection protective switchover (OSNCP); Unidirectional optical li ne protective switchover (ULSR); Unidirectional optical channel protective switchover (UPSR); Bidirectional optical line share protective switchover (BLSR); Bidirectional optical channel share protective switchover (BPSR); 1: N tributary protection etc. which with the switching time shorter than 50 ms. When ZXWM M920 is configured as OADM node on a ring network, route protection of channels can be accomplished.
2.8
Performance Monitoring Technologies ZXWM M920 uses a board performance monitoring unit to capture board performance data, which can be viewed to accurately l ocate a fault via NMS.
2.9
Power Management Technology ZXWM M920 adopts excellent power management technology to adjust and control the power and power spectrum at each point i n the system. ZXWM M920 system supports LAC (line attenuation control), APC (automatic power control), AGC (automatic gain control) etc. technologies. The gain adjustment range of LAC card is: 2-26dB; the gain adjustment range of general optical amplifier is &5dB which can both be adjusted via NM.
4
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APC and AGC technologies can control the launched power/gain on MS level to ensure hitless in-service insertion or removal of channels.
2.10
Powerful NM ZXONM E300, adopted by ZXWM M920, can manage CWDM, DWDM and SDH equipments. It employs three-layer C/S structure of GUI/Manager-DB/Agent. Due to flexible networking, it offers the remote NM and hierarchical NM, easily synchronizes the data of multi-NMS or active/standby NM and actualizes the automatic and manual switching. Based on OSPF algorithm, the NMS has ECC automatic route function, that is to say the ECC route between NEs can be set up automatically without manual configuration, which could make the networking application easily and f ast. In addition, the NMS supports remote and online upgrade of NE software and board software, provides management at multiple layers, i.e. NE layer, NE management layer and network management layer, and offers the fault management, performance management, security management, configuration management, maintenance management and system management. The NMS also provides the northbound interfaces, e.g. CORBA, Q3, SNMP and MML, so as to access the higher-lever NM easily.
2.11
WSON ZXWM M920 supports GMPLS/WSON control plane load, and has f ollowing features:
3
1
Rapid automatic route discovery
2
Strong ability for automatic resource discovery
3
Versatile resource management functions
4
Fast end-to-end service provisioning
5
Multi-level SLA
6
Standard technology and open platform
7
Flexible equipment upgradeability
8
Highly operable and maintainable
Functionality This chapter introduces the functions of ZXWM M920 in detail, i ncluding transmission, ultra-long-haul distance transmission, power management, performance test, dispersion management, service capability, communication monitoring, alarm input/output and protection.
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ZXWM M920 Product Description
3.1
Functions
3.1.1
Large Transmission Capacity
3.1.2
•
Transmission system less than 48-wavelength employs on the C band with 100 GHz channel spacing.
•
80/96-wavelength transmission system employs on the C band via inter-leaver technology with 50 GHz channel spacing.
•
192- wavelength transmission system employs on the C band via inter-leaver technology with 25 GHz channel spacing.
Ultra-long-haul Distance Optical Source ZXWM M920 employs the ultra-long-haul distance optical source technologies including forward error correction (FEC) coding, advanced out band FEC coding, RZ code pattern and self-adaptive receiving. 1
FEC technique i
Description
FEC is a signal data processing technique. At the transmitting end, it sends the data with the redundant code generated by the specific algorithm, while, at the receivi ng end, according to the relevant algorithm, it checks and corrects the bit errors occurring during transmission with the redundant codes, and restores the original signals. ii
Features
Improve the error tolerance capability of the transmission signals to reduce signal/noise ratio required by the system, and extend t he transmission distance. The conventional FEC based on G.709 can increase the OSNR tolerance about 5~6 dB, and the advanced FEC technique adopting more effective coding algorithm can increase the OSNR tolerance about 7~9dB. 2
Return to zero (RZ) technique
RZ code allows higher peak value of power than NRZ code, and the mean transmitting optical power of RZ and NRZ c ode are on the same level, so it improves the signal/noise ratio for receiving signals of the system. And RZ code reduces signal power spectral density to effectively suppress non-linear impact during transmission, so RZ code is more suitable f or ultra-long-haul transmission. 3
Self-adaptive receiving technology
The receiver adjusts the judgment point level and phase automatically according to the signal receiving conditions, in order to obtain a higher Q v alue and lower bit error rate.
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ZXWM M920 Product Description
3.1.3
Optical Amplifier Optical fiber amplifier of ZXWM M920 system is based on single-stage mode or doublestage mode. Enhanced Optical Booster Amplifier (EOBA)#Enhanced Optical Line Amplifier (EOLA) and Enhanced Optical Preamplifier (EOPA) is based on single-stage mode , and Enhanced Optical Node Amplifier(EONA) is based on double-stage mode. EOBA#EOLA and EONA use dual pumps, and EOPA use single pump or dual pumps. The wavelength of single pump source is 980nm, and the wavelengths of dual pump sources are 980nm and 1480nm. Gain flatness is &1dB. Extra metal ion and Gain Flattening Filter (GFF) can be added to ensure OA gain flatness. Characteristics of dual/single pump source of EDFA are shown as below:
Table 1
Characteristics of dual/single pump source
Quantity of pump source Dual pumps Single pump
Wavelengt h
Output power
Power stability
Power stableness technique
980nm
100-150mW
&0.02dB
Automatic gain control
1480nm
200-350mw
&0.02dB
Automatic gain control
980nm
100-150mW
&0.02dB
Automatic gain control
ZXWM M920 employs ultra-long-haul distance technologies, such as RAMAN amplifier and large power EDFA. Working principles of Raman amplifier (RA) are shown as following: Figure 3
Principles of RA
Compared with EDFA, the RAMAN fi ber amplifier enjoys low noise merit. The equivalent noise factor of the distributed RAMAN amplifier board (DRA) of ZXWM M920 is 0 dB, and switching gain is 10 dB. ZXWM M920 also provides large power EDFA, which directly improves OSNR to extend the transmission distance.
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ZXWM M920 Product Description
3.1.4
Power Management To guarantee the network performance, ZXWM M920 adopts power management technology to adjust and control the power and power spectrum at each point in the system. 1
Intelligent Power Management
The intelligent power management is im plemented by the line attenuation card (LAC), optical amplifier board and EMS. It can detect the changing state of the optical li ne power and make relevant adjustments accordingly, so as to maintain the receiving power and OSNR ratio at the normal value during ZXWM M920"s operation. Attenuation of LAC can be adjusted form 2dB to 26dB. And attenuation of LAC with attenuation slope compensation can be adjusted form 5dB to 26dB. The gain of optical amplifier in ZXWM M920 system can be adjusted via NM, and the typical range is &5dB. ZXWM M920 can provide APR or APSD protection process, that is, the EDFA automatically reduces the power or switches off the power in c ase of no input light, so as to make operator safety. Protection process is fulfilled as follows: •
Optical power supervision device detects signal loss at active optical channel.
•
Reversing pump of RA shuts down.
•
Codirectional EDFA output at downstream node of breakpoint remains (APR) or shuts down (APSD).
•
Inverse EDFA at downstream node of breakpoint shuts down and automatically checks system recovery in intervals specified.
•
Inverse EDFA output at upstream node of breakpoint remains (APR) or shuts down (APSD).
•
Codirectional EDFA at upstream node of breakpoint shuts down and automatically checks system recovery in intervals specified.
•
After bidirectional fibers of the system recover, the output of EDFA and RA at the transmission section of breakpoint returns to normal.
In ZXWM M920 system, RA can automatically shut down and manually restart. 2
Auto Performance Optimization
When APO (Auto Performance Optimization) is adopted, the power management subsystem plane can intelligently adjust LAC and EDFA gain to automatically optimize and manage DWDM system parameters such as optical power and OSNR.
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The power management subsystem is composed of controller, executor, monitor, communication (within a NE or between NEs) interface and protocols, as shown in the following figure: Figure 4
Power management sub-system
Optical board
Optical board
Monitor Executor
Monitor Executor
Backplane Interface
Backplane Interface Boardcontrol/management backplaneinterface(across subracksandracks)
Backplane Interface
Backplane Interface
SNCP
Communication control interfacebetweenNEs
SOSC
CommunicationcontrolinterfacewithinaNE
EMS
SNMS
Power management functions are at SNMS level. The controller is embedded in Manager. •
It takes the data from EMS database and analyzes it according to system service and network topology.
•
It makes the management scheme (comprising the setting states of the power adjustment executors of the NEs) in accordance with the power management algorithm.
•
It supplies the scheme to the operator to view, and then sends it to the NEs to optimize the power.
The network power optimization starts under the command of auto performance optimization. After the automatic optimization completion, it can be executed with the operator "s approval. The automatic power management starts after operation, and monitors the system performances. It can handle a fault automatically, store and display the r esult.
3.1.5
Performance Detection Function 1
ZXWM M920 systems can provide OPM to supervise optical parameters at each optical channel, e.g., optical channel power, central wavelength and OSNR. It can supervise active optical channel in real time without disconnecting services, send
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ZXWM M920 Product Description
related data to NMS and check t he associated physical quantity at NM in two vi ew modes: illustration and data. Measurement precision of central wavelength is &0.1nm, power &1.0dB and OSNR &1.5dB. OPM functions are shown as f ollowing: •
Supervise path wavelength, optical power and OSNR of WDM signals in real-time.
•
Automatic self-calibration.
•
Supervise four channels of input optical signals (with optical switch);
•
Process data on boards, and find out power, wavelength and OSNR at peak points.
If OPM is not configured, NMS can supervise OA and OTU i nput and output power. Precision of optical power is &1dB.
3.1.6
2
The OTU part has performance monitoring and overhead processing functions, which can accurately locate faulty point and type by layer.
•
OTN layer: Monitor loss of frame alarm (OTUk-LOF) and bit interleaver parity check (OTUk-BIP8), and process overhead SM-TTI.
•
SDH signal: Monitor and check B1, B2 and J0 bytes.
•
GbE signal: Monitor and collect error packets and error packet rate statistics.
3
ZXWM M920 equipment provides monitoring port in each board for the carrier to test and monitor the signal quality by accessing the apparatus.
OTN Description 1
The functions supporting OTN i
ZTE DWDM product provides the FEC function for STM-16, STM-64, GbE, 10GbE LAN, STM-256, and the FEC satisfies the coding/decoding mode of G.709 standard.
ii
Provides overhead test and process functions, which can test and manage optical channel in optical domain flexibly.
iii
By adopting the standard RS (255,239) coding/decoding specified in G.709, it can relax OSNR by 5~6dB depending upon requirement.
iv
It is very convenient for testing various services on optical layer, and clarifying network structure.
v
In traditional mode, it can access and test SDH services, which are shown as following:
vi Figure 5
10
OTN description
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ZXWM M920 Product Description
SDH/SONET Equipment
WDM
WDM
WDM WDM $% NETWROK
OTU
SDH/SONET Equipment
OTU
SDH/SONET Performance monitor
SDH/SONET Performance monitor
Note: For brief explanation, it is only required to il lustrate the unidirectional network application in above figure. Such modes are only applied to SDH services tests, and both SDH equipments and WDM equipments carry out the tests on SDH services. With G.709 standard OTN, the network hierarchy may be very clear. It applies the rich overhead sources in OTN to test and manage network, and performs corresponding test for customer services if necessary. Figure 6
OTN section
OTN SECTION
CLIENT Equipment SDH/SONET ETHERNET SAN...
WDM
WDM WDM NETWORK
OTN
CLIENT Equipment
OTN
OTN Performance monitor
OTN Performance monitor
Client service Performance monitor
Client service Performance monitor
Provides services inter-working and interconnection on OTN conveniently and cuts the cost down. With standard G.709 interface, it may actualize the network inter-working and interconnection of different equipment manufacturers on OTN, and avoid the unnecessary investment. The figure below shows that Site A, B and C adopt the transmission equipments from two different manufacturers, and the inter-working and interconnection are at SDH l evel.
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ZXWM M920 Product Description
Figure 7
Interconnection at SDH level
SITE A
SITE B
STM64
STM64+FEC Provider_1's STM64 FEC Transmitter
SITE C
Provider_1's STM64 FEC Receiver
STM64+FEC
Provider_2's STM64 FEC Transmitter
Provider_2's STM64 FEC Receiver
In above figure, Site B requires the equipments of two manufacturers to stand in the back-to-back mode, which increases the cost. However, as the equipments on OTN have uniform interfaces, it will save much money. vii
Allowable network test on OTN
•
Judges LOF via FAS.
•
Offers the loss of multi-frame (LOM) signal for the overhead signals of some OTU and ODU spanning over multiple frames.
•
Tests the SM (section monitor) overhead in OTUk
Following figure is the explanation of SM byte. Figure 8
Explanation of SM byte
SM 1
2
TTI
BIP-8
3
0 15 16
SAPI BEI
BDI
IAE
RES
DAPI
31 32
Reserved for network operator
63
The TTI is used to transfer a 64-byte message (similar to the J0 byte function in SDH/SONET domain), the message contains a source address and a destination
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address flag, which OTU signal applies to select r oute via network; in addition, other bytes are applied for the special purposes of operator. In SM, it defines one BIP-8 byte, similar to the B1 of SDH/SONET. 2
Introduction to corresponding supported bytes i
rocess of frame alignment
OTUk frame alignment OTUk frame alignment should be established by searching the OA1, OA2 FAS bytes in OTUk frame (please refer to G.709 recommendation). An OTUk LOF alarm works via monitoring the FAS bytes of OTUk frame. On reset, the frame aliagner goes into out of frame state. In out of frame state, the frame aligner goes into in-frame state when there are 24 c onsecutive valid frame patterns. In in-frame state, the frame aligner goes into out of frame state when there are 24 consecutive invalid frame patterns. The OTUk LOF alarm arises in in-frame state and disappears in out of frame state. OTUk multi-frame alignment OTUk multi-frame alignment should be established on the basis of MFAS byte contained in OTUk frame (please refer to G.709 recommendation). When the received MFAS does not match the expected number of multi-frame during 5 continuous OTUk frames, it should be regarded as out of multi-frame. When a MFAS error is not f ound in 2 continuous OTUk frames, it should be regarded as multi-frame alignment recovery and turned into multi-frame synchronous state. For the new frame alignment requirement, it needs to add two relevant alarms: OTUk out of frame alignment OTUk-LOF (k=1,2) OTUk out of multi-frame alignment (LOM) ii
Functions of TTI
All OTS, OTUk and ODUk layers have their own TTI. Currently, only the TTI test function of OTUk is considered, and the test items make use of the TTI in SM byte. The TTI mismatching is based on the comparison between the expected value and the input one of APIs (i.e. SAPI and DAPI). The APIs is a part of 64-bit TTI signal defined by G.709 recommendation. Both SAPI and DAPI must be under consideration. In order to enhance the flexibility, the test items can be set via NM (only SAPI, only DAPI, both, both not, 4 test modes). The following are the application modes:
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ZXWM M920 Product Description
Table 2
The application modes
Test item
SAPI comparison result
DAPI comparison result
Alarm state
Both not test
Not considered
Not considered
No alarm
Both test
Both matched
No alarm
Both test
One not matched at least
TIM alarm
Only test SAPI
Matched
Not considered
No alarm
Only test SAPI
Not matched
Not considered
TIM alarm
Only test DAPI
Not considered
Matched
No alarm
Only test DAPI
Not considered
Not matched
TIM alarm
The following functions are available: •
Alarm:
OTU1 and OTU2 have the OTUk TTI mismatching (TIM). The alarm only exists at the receiving side of the line. •
Setting command:
The test configuration of the received OTUk TTI has four modes: SAPI, DAPI, SAPI&DAPI, or no SAPI&DAPI. The configuration is rate independent, and only exists at the receiving side of the line. The TTI of OTUk can be configured. SAPI and DAPI can be set at the tr ansmitting end of the line, and the expected values of SAPI and DAPI can be set at the receiving end of the line. •
BIP-8 test
Both OTUk and ODUk layers have their own BIP-8. Currently, only BIP-8 test f unction of OTUk is considered, and the test items make use of the BIP-8 in SM byte. The following functions are available: •
Performance:
OTUk BIP-8 bit error statistics is required by both OTU1 and OTU2. •
Alarm:
The threshold-crossing alarm of 15-minute OTUk BIP-8 bit error is provided.
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3.1.7
Dispersion Management Dispersion restrictions must be taken into consideration in long-haul t ransmission. Certain amounts of the dispersion compensation modules are configured in the dispersion compensation plug-in box (DCM) of ZXWM M920 on actual demands. By configuring the values of line compensation, precompensation and post-compensation reasonably, the system could actualize the balance compensation, as shown in Figure 9. Figure 9
3.1.8
Dispersion management
Service Functions 1
Service Access Function
ZXWM M920 can access the following services: •
SDH services including STM-1/4/16/64/256
•
SONET services including OC-3/12/48/192/768
•
ATM or POS services including VC4, VC4-4c and VC4-16c
•
Ethernet services including FE, GbE, 10GbE
•
Enterprise intranet services such as ESCON, FICON, and FC.
•
Any rate services between 34 Mbit/s ~ 2.7 Gbit/s
2
Service Convergence Function
ZXWM M920 can converge and de-multiplex the low rate signals. •
Each SRM42 board converge 4 STM-1/4 SDH signals or ATM signals to STM-16 signal.
•
Each SRM41 board converge 4 STM-16 SDH signals or ATM signals to STM-64 signal.
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ZXWM M920 Product Description
3.1.9
•
Each MQT3 board converge 4 STM-64/OC-192/10GbE/OTU2 signals to OTU3 signal.
•
Each GEM2/GEMF board converge 2 GbE signals to 2.5 Gbit/s rate.
•
Each GEM8 board converge 8 GbE signals to 10 Gbit/s rate.
•
DSA board implements the multiplexing/demultiplexing between eight data service signals at tributary side and two STM-16 signals at aggregate side.
•
It is applicable to different networking conditions by selecting tributary modules and aggregation module type.
Wavelength Add/Drop Function The ZXWM M920 supports the adding/dropping of wavelengths in the granularity of 1 wavelength, 4 wavelengths or 8 wavelengths. The quantity of wavelengths to be added/dropped can be expanded from 1 to 80. An optical add/drop multiplexer subsystem can be configured as a fixed one (FOADM) or a reconfigurable one (ROADM). FOADM: In such subsystem, OAD board is needed to add/drop fixed wavelengths in the system. ROADM: In such subsystem, additional WBU or WSU board is needed. Configure the system in the EMS to implement the adding/dropping and direct transmission of any specified wavelengths in the same direction. Moreover, the ROADM subsystem provides the port assignment function, with which wavelengths can be added/dropped through assigned ports. In ROADM subsystems, it is unnecessary to adjust fibers manually when the quantity of wavelength to be added/dropped changes or some other wavelengths need to be added/dropped.
3.1.10
Communication and Monitoring Functions Communication and monitoring functions are implemented jointly by the main control board (SNP) and optical supervision channel board (SOSC). The functions are: 1
Main control board (SNP)
•
Sample and process the alarms and performance of all boards in the equipment and report them to the NMS.
•
Receive various configurations and maintenance commands issued by the NMS, and forward them to corresponding boards.
•
Transfer the data from other NE SNPs.
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•
As the traffic increases, ZXWM M920 is applicable to the multi-rack configuration at one NE. One SNP board can manage 16 racks at most. Users can flexibly configure according to the actual number of racks at the node equipment.
•
The fan unit monitors the fan speed and temperature, and feeds back the information to NMS, so that the user can view the relevant information at the NMS. Meanwhile, NMS sends the commands to the fan unit to manually adjust the fan speed.
•
Optical supervision channel card (SOSC)
The SOSC uses the 1510 nm channel to transmit the NE monitoring information in the bidirectional transceiving mode at the monitoring channel rate of 100 Mbit/s. It multiplexes and demultiplexes overhead, order wire and clock synchronization.
3.1.11
Alarm Input/Output Function 1
Alarm input function
ZXWM M920 uses the optical coupler isolation signal to access the alarm inputted by the external monitoring equipment, and displays it on the NMS through the ALARM_IN interface on the SEIA board. The system can access 10 external alarms at most. The alarm type can be set through the NMS for detection of external environment alarms, such as fan, doors and temperature. 2
Alarm output function
The equipment alarm is outputted to the WARN interface in the SEIA board and then outputted to the monitoring display cabinet or other monitoring units in the equipment room via the ALARM_OUT interface of the SEIA board. Signals are isolated by relays.
3.1.12
System Level Protection 1
OTU board 1:N protection
The WDM networks generally require spare OTU boards and elements. W hen configured in protective mode, spare part can realize real-time protection, which is much quicker, safer and saves maintenance cost. 1:N protection only need to configure OTU and OMCP units at both ends of OTM, and may utilize the spare OTU board also, which has a low cost. The processes are shown in Figure 10.
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ZXWM M920 Product Description
Figure 10 The Block Diagram of Optical Path 1: N Protection Function
OTU 0
OTU 0
2
T r a f 8 f i c
!
2
2 2 1
Optical Switch
3
OTU 8
OTU 8
4
1
2 2 ! Optical Switch
3
OTU 7
OA
OA
OTU 7
1
r a f f i c 0
Optical Switch
3
OMCP T r a f f i c
2
2 2 1
Optical Switch
T r a f f i 7 c
4
2
T 1
!
2 2
OMCP !
T r a f f 8 i c
2
4
T r a f f i c
Optical Switch
3
4
2
T r a f f 7 i c
!
2 2 1
3
OTU 1
4
!
2 2 OTU 1
1
Optical Switch
3
4
T 1 r a f f i c 0
When several paths of services are f aulty simultaneously, it is required to protect the services with higher priority set in the NMS. One OMCP board can perform 1: 8 protections. 2
Power Supply Protection
It has 1+1 power protection on the sub-rack with two power inputs. The sub-rack power module PBX fulfills reverse c onnection prevention, soft start, balance and supervision of two power inputs. The information is sent to PWSB on the top of rack for processing and reporting to NM via alarm cable.
3.1.13
Network level Protection 1
Optical Path 1+1 Protection i
Protection principles
The optical path 1+1 protection is implemented with the OP board, by sending concurrently and receiving selectively in both working path and protection path. ii
Applications
One OP board is used to protect a pair of bidirectional services with the same wavelength. Under the 1+1 protection case, the number of OP boards c onfigured is the same as that of protected channels. iii
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Chain networking
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The protection path and the protected path are transmitted in the same fiber. On the chain networking, 1+1 protection can only perform equipment protection instead of route protection, as shown in Figure 11. Figure 11
iv
Optical Path Layer 1+1 Protection (Chain Networking)
Ring networking
On the ring networking, the protection path and the protected path reach the receiving end through different paths. 1+1 path protection can protect both route and the equipment. The ring networking is shown in Figure 12. Figure 12
Ring Networking
C Protection path
B
Work path
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D
A
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ZXWM M920 Product Description
2
MS 1+1 Protection
The MS 1+1 protection of ZXWM M920 adopts 1+1 protection mode section by section, as shown in Figure 13. Figure 13
OTU OTU OTU OTU OTU OTU OTU
OTU
Functional Block Diagram for MS 1+1 Protection
λ1
λ1
λ2 λ3
O M D
EOBA
EOPA
A fiber 2
λn
S O P
λ1
λ2
O D U
O D D
EOPA
λ3
λn
S O P
λ1
B fiber 1
λ2 λ3
A fiber 1
λ2
EOBA B fiber 2
λn
O M U
λ3
λn
OTU OTU OTU OTU OTU OTU OTU
OTU
Fiber 1 is the work path and fiber 2 is the protection path
2-fiber bidirectional path shared protection In the 2-fiber bidirectional path shared protection ring, '1 of the external ring forms the working path, and '1 of the internal ring forms the protection path. The working path allows wavelength multiplexing of multiple unidirectional services, and the protection path shares protection of all services on the working path. Meanwhile, the optical switch can be connected via OPCS (path shared protection board) to control the adding status of adding protection wavelengths, so as to avoid conflict, on the protection ring, of multiple services that use the same working wavelength. In Figure 14, for example, as optical fibers on a certain span failed (indicated by the symbol of &), services passing this span are broken, thus the access switch starts operation at the transmitting end, and services are transmitted along the protection route. When the two switching switches at the receiving end start operation, services are received from the protection route, and the service protection is actualiz ed.
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Figure 14 Schematic diagram of 2-fiber bidirectional path shared protection
Shared protection pa th Access switch +,of the shared -./0 protect ion 12)* path Working path Service route after switching Service route before switc hing
3.1.14
Switching '()* switch
Network management channel backup In DWDM transmission networks, network m anagement information is transmitted through an optical supervisory channel, which is generally t ransmitted through the same optical fiber with main channel. In case of any f ailure in main channel, it will also affect the supervisory channel, i.e. loss of c ontrol on NE. In the condition of high traffic and backbone network, it is not affordable to lose control. To solv e such problems, ZXWM M920 provides abundant measurements and protection to t he supervisory channel. In ring network, when certain section fails (e.g. optical fiber damage) in a certain direction, network management information automatically switch to the optical supervisory channel in the other direction of the ring without affecting the management of the whole network. In chain network, the situation is more critical, because breakage in optical fi ber means breakage of supervisory channel. Consequently, network management administrators are unable to get the supervisory information of failed station. To avoid this accident, network management information should use the backup channel. By using data communication network (DCN) and routers, ZXWM M920 can provide backup network management channel. When the network is normal, network management information is transmitted over the main supervisory channel, as shown in Figure 15.
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ZXWM M920 Product Description
Figure 15
Network management through supervisory channel
On the failure of main supervisory channel, network elements automatically switch the management information to the backup channel to guarantee that the network management system can supervise and operate the entire network, as illustrated in the Figure 16. Figure 16
3.1.15
Network management through backup supervisory channel
Supervision Subsystem Supervision subsystem consists of SNP board, SOSC board and SEI board. It provides a variety of functions, such as communication bus, EMS management interface and supervision channel transmission. The functions of different boards are described in the below Table 3 :
Table 3
Board/Fu nctional Module Code
Board
Name Function Description
SNP
Node Processor Board Optical Supervision Channel Board
Implements various functions, such as
SOSC
22
Functions of board in supervision subsystem
Establishes and maintains optical supervision channel between the NEs, which provides route for communication between the NEs. It also implements the
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Board/Fu nctional Module Code
SEI
Board
Name Function Description
Extension Interface Board
transmission of ECC information, order wire information, user information (transparent user channel) and control information between the NEs. Leads sub-rack interface to the panel so that the master rack and t he slave rack can connect with each other.
The position of supervision subsystem is shown in Figure 17. Figure 17
3.1.16
The position of supervision subsystem
L0/L1/L2 integrated transport technologies ZXWM M920 WDM platform integrates L0/L1/L2 transport technologies and enables the flexible accessing and dispatching of service, especially the prevailing Ethernet servic e. ZXWM M920 offers three kinds of ROADM technology aiming at different scenarios to provide the most cost-effective solution for the customer. ZXWM M920"s multi-degree ROADM based on WSS technology enables the wavelength routing and accelerates the deployment of new services. To better transport the Ethernet service, ZXWM M920 offers both tr ansparent transmission and statistic multiplexing of Ethernet service, the former is based on TDM technology without affecting the Ethernet service, the latter is based on L2 switch technology to enhance the transport efficiency of Ethernet service and reduce the CAPEX and OPEX of the network. ZXWM M920"s L2 switch supports E-Line(EPL & EVPL) and E-LAN.
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ZXWM M920 Product Description
3.1.17
ROADM Function ROADM supports dynamic wavelengths add/drop through remote control from NMS. In directionless configuration, the wavelength can be retrieved or assigned from/to any direction. In colorless configuration, any port can add/drop any wavelength. ZTE ROADM solutions are based on the WB (wavelength blocker), PLC (Planar Lightwave Circuit) and WSS (Wavelength Selective Switch) technology, which can support 2~9 directions ROADM solution. ROADM provides node reconfiguration, implements connection between any two nodes, wavelength-level add/drop and pass-through configuration without m anual intervention, thus addressing service demands and cutti ng operation & maintenance cost. In addition, the adoption of ULH WDM techniques greatly reduces full-band service terminations and undesirable O-E regeneration, enabling a highly scalable network, and saving equipment investment. With ROADM, multi-ring, mesh and star can be formed flexibly, adapting to dynamic characteristics and networking requirements for f uture service networks. ZXWM M920 supports colorless and directionless ROADM solutions which are the most flexible. Colorless means any wavelength can be assigned to any port. Directionless means any direction can be assigned to any port. ZXWM M920 ROADM supports multiple networking modes, meets networking requirements at different levels. The Comparison of ROADM networking schemes is shown as below table.
Table 4
ZTE Networking Scheme And Application Environment
Scheme
Linear ROADM
Ring ROADM
Mesh ROADM
Main application environment
Long-haul trunk line
Metro network
Metro network
Technology
WB ROADM PLC ROADM
WB ROADM PLC ROADM WSS ROADM
WSS ROADM
Spectrum balancing, wavelength add/drop
Wavelength add/drop, wavelength scheduling, wavelength grooming
Wavelength add/drop, wavelength scheduling, wavelength grooming
Available functions
ZTE ROADM system provides multiple solutions, complete networking modes, meeting requirements of the customers with different network status and at various levels. The below table lists the recommended ROADM configuration targeting customers" different requirements:
Table 5
ZTE/ ROADM Solutions
Solution
Characteristics
WSS ROADM with tunable port in add channel
24
Add/drop wavelengths can be provisioned randomly, wavelength grooming flexibly.
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Target customer Uncertainty in service growth, large traffic of future services, or requiring extremely high network
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flexibility and wavelength route. Add/drop wavelengths are fixed, supports complex network architecture in the future.
Services are relatively fixed, future networks may evolve towards Mesh.
PLC ROADM with fixed port Add/drop wavelengths are in add/drop channels fixed, the cost is low.
Services are relatively fixed, future services are predictable.
WB ROADM with fixed port in add/drop channels
Services are relatively fixed, future services are predictable.
WSS ROADM with fixed port in add channel
3.1.18
Add/drop wavelengths are fixed, the cost is low.
Electrical Cross-Connect Function Electrical Cross-Connect system can access data services including GE, FC, FICON, ESCON, SDH and DVB. The services can be aggregated into multiple ODUk services on the tributary convergence board and be cross connected at a granularity of ODU0/ODU1/ODU2. Then the cross connected signals are aggregated into OTU2 on the group convergence board and are eventually output from the line-side interface. Electrical Cross-Connect system is categorized as centralized or distributed switching platform in . Figure 18 Electrical Cross-Connect System Structural Diagram
As the figure shown, Electrical Cross-Connect system is composed of customer-side aggregation, line-side aggregation, and switching units. So it can achi eve sub-wavelength dispatching. The Electrical Cross-Connect system can access multi-service such as, Ethernet, SDH, Fiber Channel (1G/2G), ESCON, FICON, etc. And it adopts a powerful electrical-layer cross-connect capability and enables trunk and wavelength conversion. Adding/dropping services and pass-through services can occupy different sub-
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25
ZXWM M920 Product Description
wavelengths in a single wavelength for transmission, minimizing pass-through wavelengths and resulting in wavelength saving and lowered CAPEX. There are many kinds of tributary convergence boards, which multiplex the customer-side services and transmit them to the cross-connect unit via the backplane interface. The cross-connect unit, which named CSUB, has clock processing and backplane signal cross-connect functions. The CSUB choose an advanced clock from line clocks and external clocks as system clock. The tributary convergence units include DSAC, SAUC and SMUBC boards. DSAC board has 8 ports and can access multi -data service respectively. SAUC board can assess 4 STM-16 signals. SMUBC board can assess 10G signals Per group convergence board, the 10G line board (OTU2 Line card 1*10G) receives the signals from the backplane, and aggregates them into OTU2 to output at the line side. And the name of group convergence board is SMUBL. The centralized Electrical Cross-Connect system can achieve the sub-wavelength switch. The switching capacity is 360G. It also can cooperate with the ROADM to achieve wavelength and sub-wavelength switch. The distributed service switching platform (DSS) consists of four data service access cards (DSAB), and each card is composed of line side unit, client unit and switching matrix. Client unit can access multi-service such as Ethernet, SDH, Fiber Channel (1G/2G), ESCON, FICON, etc. The non-blocking service switching between these f our cards can realize sub-wavelength service dispatching or multicasting between multiple directions. The switching granularity can be ODU0/ODU1/ODU2. Total switching capacity of each DSS is 80G and single subrack can support multiple DSS. The cross connected signals are aggregated into OTU2 on the group convergence board and are eventually output from the line-side unit. In DSS subsystem, switching matrix is distributed on service card and doesn"t occupy other service slots. Such highly integrated cards can reduce power consumption effectively.
3.1.19
Wavelength Tuning Function Traditional DWDM systems use fixed wavelength lasers as light sources, which only output fixed wavelengths complying with the specifications of ITU-T G.692. Fixed wavelength lasers can not be fully utilized when they are used as standby light sources, which results in the increase of cost. W ith the continuous development of light source technology, a kind of tunable wavelength laser that can meet the requirement for multiwavelength tuning appears. The #tunable wavelength laser $ refers to a laser module that can be controlled to output different wavelengths in a certain bandwidth. The channel quantity and channel spacing of the output wavelengths meet the specifications of ITU-T G.692. With the application of tunable wavelength lasers, wavelengths can be selected dynamically for signals in a DWDM system according to the actual application of wavelengths. Especially when the system uses standby light sources, using tunable wavelength lasers can improve the utilization ratio of wavelengths. Some service boards of the ZXWM M920 support both fixed wavelength output and tunable wavelength output. The below table lists the boards supporting tunable
26
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wavelengths and their tuning ranges (relationship among operating band, channel quantity and channel spacing).
Table 6
Boards Supporting Wavelength Tuning Function
Board
Operating Band
Channel Quantity @ Channel Spacing
40G boards (with FEC or AFEC) TST3
C band
40 CH@100 GHz 80 CH@50 GHz
MQT3 10 G boards (with FEC or AFEC) EOTU10G C band
40 CH@100 GHz 80 CH@50 GHz 96 CH@50 GHz (CE band)
C band
40 CH@100 GHz 80 CH@50 GHz
OTUF
C band
4 CH@100 GHz (continuous wavelengths) 16 CH@50 GHz (continuous wavelengths)
GEMF
C band
DSAF
C band
SRM41 FCA SMUBL SOTU10G 2.5 G boards (with FEC)
16 CH@100 GHz (continuous wavelengths)
2.5 G boards (without FEC) OTU
C band
3.2
Networking
3.2.1
System Applications 1
H@100 GHz (continuous wavelengths) 16 CH@50 GHz (continuous wavelengths)
8/16/32/40/48-Wavelength System Applications
For less than 48-wavelength system, ZXWM M920 whole network application is illustrated in Figure 19. Figure 19 Whole Network Application with the ZXWM M920 (the System less than 48-Wavelength)
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ZXWM M920 Product Description
OTM OTM
OTU 1 OTU 2
S1 l1
R M1 M1
S2 l2
R M2 M2
EDFA PA
Sn ln
OTM OTM
O M U
EDFA PA R'
EOBA
MPI-S
SD2 R 2 S'
EOLA
MPI-R
ln-1
OTU n
OAD OAD O O T T U U
R Mn
EOPA
O T U
EDFA Preamplifier
O T U
OSC
F C S O
OSCF
R 2 SD2
OTU 2
EDFA PA O D U
EOPA
EDFA LA
MPI-R S' MPI-R S'
EOLA
R' MPI-S
R n-1 SDn-1
OTU n
R n SDn
EOBA
OAD OAD
O O T T U U
n-1 OTU n
F C OSC S O
R 1 SD1
OTU 1
OTU 2
n-1 SDn-1 R n-1 OTU
OSC
OSCF
OTU 1
O D U
SDn R n OSC
OTU n-1
OADM
SD1 R 1
Sn-1 R Mn-1
OTU n-1
OLA
EDFA PA
O O T T U U
O M U
R M1 S 1 l1
OTU 1
R M2 S 2 l2
OTU 2
R Mn-1 S n-1 OTU ln-1 n-1 R Mn S n ln
OTU n
The module shown in the diagram is board in ZXWM M920. i
Working wavelength range and channel spacing
C band (191.3 THz ~ 196.0 THz) at 100 GHz channel spacing ii
System composition
•
OTM: Optical terminal equipment. As shown in Figure 32. OTU belongs to the optical transfer platform, OMU and ODU belong to the OM and OD platform, EOBA and EOPA belong to the optical amplifying platform, SOSC belongs to the monitoring platform. At the receiving end of the OTM, modules should be added for dispersion compensation after long distance transmission. The wavelength spacing transferred by OTU is 100 GHz.
•
OLA: Optical line amplifier, amplifier, including including EOLA and SOSC. As shown shown in Figure 32., EOLA belongs to the optical amplifying platform; SOSC belongs to the monitoring platform.
•
OADM: Optical add/drop multiplexer. As shown in Figure Figure 33, 33, OAD OAD belongs belongs to the add/drop platform, OTU belongs to the optical transfer platform, and SOSC belongs to the monitoring platform.
2
80/96-Wavelength System Applications
Take a unidirectional 2-segment transmission for example, and the whole network application of the 80/96-wavelength ZXWM M920 is ill ustrated ustrated in Figure 20. Figure 20
28
Whole Network Network Application with the ZXWM ZXWM M920 M920 (the System with 80/96-Wavelength)
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OTM1 OTU . .
OTU . .
OMU C100_1
EOBA
OLA 100km G. 652
OTM2 100km G. 652
EOPA
OCI C50_1
DCM
OMU C100_2
EOPA
LAC
DCM EOBA
O S C
DRA
O S C
OPM
DRA
OTU . .
ODU C100_2
OTU . .
OCI C50_1
LAC EOBA
O S C
ODU C100_1
OPM
The module shown in the diagram is board in ZXWM M920. i
Working wavelength range and channel spacing
C band at 50 GHz spacing ii •
System composition
OTM: Optical terminal equipment
OTU: belongs to the optical transfer platform in Figure 32. OMU, ODU and OCI: The OM and OD platforms in Figure 33. OMU/ODU: Multiplex/de-multiplex Multiplex/de-multiplex C band (191.3 THz ~ 196.0 THz), THz) , C+ band (191.35 ( 191.35 THz ~ 196.05 THz), with the channel spacing of 100 GHz. OCI: By adopting the inter-leaver technology, it multiplexes/de-multiplexes multiplexes/de-multiplexes C band and C+ band, and integrates them into the C band multiplexing multiplexing signals with 50 GHz channel spacing. EOBA, EOPA: Belong to the optical optical amplifying platform in Figure 32. In an 80/96wavelength system, they amplify the C band signals. At the receiving end of the OTM, modules should be added for dispersion compensation and power balance after long distance transmission. SOSC: Monitoring platform in Figure 32. •
OLA: Optical line amplifier
EOBA and EOPA: Belong to the optical amplifying platform in Figure 32.. In 96/176wavelength systems, they amplify the C band and L band signals. SOSC and OPM: Belong to the m onitoring platform in Figure 32.. SOSC transmits and receives monitoring information, while OPM tests the optical performance of the optical interfaces. 3
160/176-Wavelength System Applications
Take a unidirectional 2-segment transmission for example, and the whole network application of the 160/176-wavelength ZXWM M920 is ill ustrated in Figure 21. Figure 21
Whole Network Application with the ZXWM M920 (160/176- Wavelength)
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ZXWM M920 Product Description
OTM1 OTU . .
OTU . .
OTU . .
OTU . .
OLA
OTM2
OMU C100_1
OPM OCI C50_1
OMU C100_2
OMU L100_1
O S C
OCI L50_1 OMU L100_2
DCM EOBA
EOPA
100km G. 652
OBM !C/L"
OBM !C/L"
EOBA
DRA
EOBA
O S C
DCM
OPM
LAC
100km G. 652
OBM !C/L"
OPM
LAC
EOPA
EOBA
LAC
DCM EOPA
OBM !C/L"
DRA
LAC
EOBA
OTU . .
ODU C100_2
OTU . .
ODU L100_1
OTU . .
ODU L100_2
OTU . .
OCI C50_1
O S C
DCM EOPA
EOBA
ODU C100_1
OCI L50_1
OPM
The module shown in the diagram is board in ZXWM M920. i
Working wavelength range and channel spacing
C+L band at 50 GHz spacing ii •
System composition
OTM: Optical terminal equipment OTU: belongs to the optical transfer platform in Figure 32.
OMU, ODU, OCI and OBM: The OM and OD platform in Figure 33. OMU/ODU: Multiplex/de-multiplex Multiplex/de-multiplex C band (191.3 THz ~ 196.0 THz), THz) , C+ band (191.35 ( 191.35 THz ~ 196.05 THz), L band (187.0 THz ~ 190.9 THz) and L+ band (186.95 THz ~ 190.85 THz) with the channel spacing of100 GHz. OCI: By adopting the inter-leaver technology, it multiplexes/de-multiplexes multiplexes/de-multiplexes C band and C+ band, L band and L+ band, and integrates them into the C band and L band multiplexing signals with 50 GHz channel spacing. OBM: At the transmitting end, the OBM feeds the amplified C/L band signals via the C/L pass band OM into the fiber. At the receiving end, it de-multiplexes the received signals into the C/L band multiplexing signals and sends them to the relevant amplifiers. amplifiers. EOBA and EOPA: Optical amplifying platform in Figure 32. I n 160/176-wavelength system, they amplify the C band and L band signals. At the receiving end of the OTM, modules should be added for dispersion compensation and power balance after long distance transmission. SOSC: Monitoring platform in Figure 32. •
OLA: Optical line amplifier. amplifier. Compared with the 40/48-wavelength 40/48-wavelength system, system, an OM part is added for C/L band signals.
OBM: Multiplexes/de-multiplexes Multiplexes/de-multiplexes signals of C/L band to the C band and L band. EOBA, DCM and EOPA: Optical amplifying platform in Figure 32. In 160/176-wavelength system, they amplify the C band and L band signals. Among them, DCM compensates dispersion for l ong distance transmission.
30
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SOSC and OPM: Monitoring platform in Figure 32. SOSC transmits and receives monitoring information, while OPM tests the optical performance of the optical interfaces. 4
192-Wavelength System Applications
Take a unidirectional 2-segment transmission for example, and the whole network application of the 192-wavelength ZXWM M920 is illustrated in Figure 22. Figure 22 Whole Network Application with the ZXWM M920 (the System with 192-Wavelength)
The module shown in the diagram is board in ZXWM M920. i
Working wavelength range and channel spacing
C band at 25 GHz spacing ii •
System composition
OTM: Optical terminal equipment
OTU: belongs to the optical transfer platform in Figure 32. OMU, ODU, OCI: The OM and OD platform in Figure 33.
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ZXWM M920 Product Description
OMU/ODU: Multiplex/de-multiplex C1001 sub-band (191.300 THz ~ 196.000 THz), C1002 sub-band (191.350 THz ~ 196.050 THz), C1003 sub-band (191.325 THz ~ 196.025 THz) and C1003 sub-band (191.375 THz ~ 196.075 THz) with the channel spacing of100 GHz. OCI: OCI1 and OCI2, By adopting the inter-leaver technology, it multiplexes/de-multiplexes C1001 sub-band and C1002 sub-band, C1003sub-band and C1004 sub-band integrates them into the C band multiplexing signals with 50 GHz channel spacing. OCI3, By adopting the inter-leaver technology, it multiplexes/de-multiplexes C501 and C502 sub-band integrates them into the C band multiplexing signals with 25 GHz channel spacing EOBA and EOPA: Optical amplifying platform in Figure 32. I n 192-wavelength system, they amplify the C band signals. At t he receiving end of the OTM, modules should be added for dispersion compensation and power balance after long distance transmission. SOSC: Monitoring platform in Figure 32. SOSC and OPM: Monitoring platform in Figure 32. SOSC transmits and receives monitoring information, while OPM tests the optical performance of the optical interfaces.
3.2.2
Networking Modes To satisfy the need of various networking modes and f unctions, ZXWM M920 can be configured as an OTM, OADM and OLA. 1
Point-to-Point Networking
•
For short-haul transmission, ZXWM M920 can provide point-to-point network without OLA, as shown in Figure 23.
Figure 23
Point-to-Point Networking (Short-Haul)
OTM
•
OTM
For long-haul distance, trunk amplification mode is employed. An EOLA is added between OTMs, as shown in Figure 24, which consists of three optical amplifying segments.
Figure 24
Point-to-Point Networking (Long-Haul)
OTM
2
32
OLA
OLA
OTM
Chain Networking
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The chain networking application with the OADM function is shown in Figure 25. Figure 25
Application of Chain Networking
OTM
3
OLA
OADM
OTM
Ring Networking
The ring networking application is shown in Figure 26. Figure 26
Application of Ring Networking
OADM OADM
OADM
OADM OADM
4
Ring-with-Chain Networking
The ring-with-chain networking application is shown in Figure 27.
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33
ZXWM M920 Product Description
Figure 27
Ring-with-Chain Networking
OADM
OADM
OTM
OLA
OADM
OADM
5
Cross Connection Networking
Cross connection networking is shown in Figure 28. Figure 28
Cross Connection Networking
OTM
OLA
OTM
OADM
OLA
OTM
OLA
OTM
3.3
Transmission Codes Supported By adopting the ultra-long-haul distance optical source and optical amplifying technologies, the transmission codes supported by ZXWM M920 are listed in the following Table 7 .
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Table 7
The Transmission Codes Supported by 40 ×2.5 Gbit/s System
Category
Without FEC (OSNR > 20 dB)
FEC without RAMAN (OSNR>15dB)
FEC+ RAMAN (OSNR >15 dB)
Note:
Specifications
Target Distance (km)
1 × 36 dB
1 × 130 km
2 × 33 dB
2 × 120 km (240 km)
3× 31dB
3 × 112 km (336km)
10× 23 dB
10 ×84 km (840 km)
1 × 41 dB
1%149km
2 × 38 dB
2%138km (276km)
3× 36dB
3%130km (390km)
20 × 25dB
20%91km (1820km)
1 × 45dB
1%164km
2× 42dB
2%152km (304km)
3× 40dB
3%145km (435km)
20 × 28 dB
20%102km (2040km)
FEC indicates common FEC coding and decoding, AFEC is advanced FEC coding
and decoding, and ×
means that the channel difference should be included. Target
Distance is calculated at 0.275dB/km.
Table 8
The Transmission Codes Supported by 40 /48× 10 Gbit/s System
Category
AFEC NRZ
AFEC RZ
Note:
Specifications
Target Distance (km)
remark
1 × 61 dB
1 × 244km
RPOA,40 ×10Gbit/s
1 × 49 dB
1 ×196km
DRA, 40 ×10Gbit/s
1 × 57 dB
1×228km
RPOA,48 ×10Gbit/s
1 × 48 dB
1 × 192 km
DRA, 48×10Gbit/s
30 × 22 dB
30 × 88 km
-
12 × 30 dB
12 × 120 km
-
1 × 64 dB
1 × 256km
RPOA,40 ×10Gbit/s
1 × 52 dB
1 ×208km
DRA, 40 ×10Gbit/s
1 × 60 dB
1×240km
RPOA,48 ×10Gbit/s
1 × 51 dB
1 × 204 km
DRA, 48 ×10Gbit/s
50 × 22 dB
50 × 88 km
-
18× 30 dB
18 × 120 km
-
FEC indicates common FEC coding and decoding, AFEC is advanced FEC coding
and decoding, and × means that the channel difference should be included. Target Distance is calculated at 0.275dB/km.
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ZXWM M920 Product Description
The Transmission Codes Supported by 80/96 × 10 Gbit/s System
Table 9
Category
AFEC NRZ
AFEC RZ
Note:
Specifications
Target Distance (km)
remark
1 × 45 dB
1 ×180km
DRA, 80 ×10Gbit/s
1 × 44 dB
1 × 176km
DRA, 96×10Gbit/s
20 × 22 dB
20 × 88 km
-
8 × 30 dB
8 × 120 km
-
1 × 48 dB
1 ×192km
DRA, 80 ×10Gbit/s
1 × 47 dB
1 × 188km
DRA, 96 ×10Gbit/s
30 × 22 dB
30 × 88 km
-
12× 30 dB
12 × 120 km
-
FEC indicates the common FEC coding and decoding, AFEC is advanced FEC
coding and decoding, and ×
means that the channel difference should be included. Target
Distance is calculated at 0.275dB/km.
Table 10
The Transmission Codes Supported by 192 × 10 Gbit/s System
Category
AFEC NRZ
Specifications
Target Distance (km)
remark
1 × 41 dB
1 ×164km
DRA
10 × 22 dB
10 × 88km
-
3 × 30 dB
3 × 120 km
-
Note: FEC indicates the common FEC coding and decoding, and AFEC is advanced FEC coding and decoding, and × means that the channel difference should be included. Target Distance is calculated at 0.275dB/km.
Table 11
The Transmission Codes Supported by 40/48× 40 Gbit/s System
Category
AFEC+ODB
AFEC+DPSK
Note:
36
Specifications
Target Distance (km)
remark
1 × 45 dB
1 ×180km
DRA, 40 ×40Gbit/s
1 × 44 dB
1 × 176km
DRA, 48×40Gbit/s
14× 22 dB
14 × 88 km
-
3 × 30 dB
3 × 120 km
-
6 × 30 dB
6 × 120 km
DRA
1 × 47 dB
1 ×188km
DRA, 40 ×40Gbit/s
1 × 46 dB
1 × 184km
DRA, 48×40Gbit/s
22× 22 dB
22 × 88 km
-
5 × 30 dB
5 × 120 km
-
12 × 30 dB
12 × 120 km
DRA
FEC indicates the common FEC coding and decoding, and AFEC is advanced FEC
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coding and decoding, and ×
means that the channel difference should be included. Target
Distance is calculated at 0.275dB/km.
Table 12
The Transmission Codes Supported by 80/96 × 40 Gbit/s System
Category
AFEC+ODB
AFEC+DPSK
Specifications
Target Distance (km)
remark
1 × 42 dB
1 ×168km
DRA, 80 ×40Gbit/s
1 × 41 dB
1 × 164km
DRA, 96×40Gbit/s
7× 22 dB
7 × 88 km
-
3 × 30 dB
3 × 120 km
DRA
1 × 44 dB
1 ×176km
DRA, 80 ×40Gbit/s
1 × 43 dB
1 × 172km
DRA, 96×40Gbit/s
16× 22 dB
22 × 88 km
-
3× 30 dB
3 × 120 km
-
6× 30 dB
6 × 120 km
DRA
Note: FEC indicates the common FEC coding and decoding, and AFEC is advanced FEC coding and decoding, and × means that the channel difference should be included. Target Distance is calculated at 0.275dB/km.
4
System Architecture This chapter briefly introduces the overall structure of ZXWM M920, including hardware and software, and its applications.
4.1
Description of System Functional Platform he functional block diagram of ZXWM M920 is shown in Figure 29.
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ZXWM M920 Product Description
Figure 29 Functional Blocks of the ZXWM M920
ZXWM M920 Dense Wavelength Division Multiplexing Optical Transmission System
OTM, OADM and OLA
M p o l a n t i f t o o r m r i n g
O p t i p c a l l a a t f o m r m p l i f y i n g
A d d / d r o p p l a t f o r m
O p M l a a t f n o d r m O D
S e r v i p c l e a t f c o o n r m v e r g e n t
ZXONM E300
O p p t i l a c a t l f t o r r a mn s f e r
m a S n y a g s t e m e m e n t
Hardware s stem
m C a o n n f a i g g u e r m a e t i n o t n
m a n F a g a u e l m t e n t
m P a e n r f o a g r m e m a n e c n t e
mM a a n i n a g t e e n m a n e c n t e
m a S n e a g c u e r m t i e y n t
NM software system
ZXWM M920 consists of hardware system and NM software system, which are independent of each other and work coordinately. ZXWM M920 hardware system consists of optical transfer platform, service convergent platform, optical wavelength multiplexing (OM) and optical wavelength de-multiplexing (OD) platforms, add/drop platform, optical amplifying platform and monitoring platform.
4.1.1
Optical transfer platform It employs Optical/electric/optical conversion mode to convert wavelengths between the service signals and line signals. The service signals support the SDH signals at STM-1/4/16/64/256 rates, OC-3/12/48/ 192/768 and other service signals (i.e. POS, FC, FICON, ESCON, DVB, FDDI, FE, GbE, 10GbE, ATM and PDH) at the client side, satisfying the G.957, G691 and IEEE802.3 recommendation. The line signals are compliant with the G.692 recommendation.
4.1.2
Service convergent platform It converge multiple low-speed signals into one wavelength for transmission, and completes its reversion process. The low-speed signals include STM-1, STM-4, STM-16, STM-64 and GbE. The maximum rate at the line side is 43.018 Gbit/s.
38
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4.1.3
OM/OD platform It consists of two parts: the OM and OD. 1
The OM: It couples and multiplexes multiple optical signals with different wavelengths from the optical transfer platform and service convergent platform i nto one fiber for transmission.
2
The OD: It separates the line optical signals from the optical amplifying platform by wavelengths, and sends them to different optical transfer platforms and service convergent platforms.
The OM and OD of ZXWM M920 employ C band with 100 GHz channel spacing in less than 40-wavelength transmission. The OM and OD of ZXWM M920 employ C/L band by using interleaver technology with 50 GHz channel spacing in 40-176-wavelength super-large capacity transmission. The OM and OD of ZXWM M920 employ C band by using interleaver technology with 25 GHz channel spacing in 192-wavelength super-large capacity transmission.
4.1.4
Add/drop platform It implements add/drop and multiplexing f unction for the wavelength of the optical line signals. The ZXWM M920 can be configured as a fix ed optical add/drop multiplexer (FOADM) or a reconfigurable optical add/drop m ultiplexer (ROADM) depending on whether the wavelengths to be added/dropped are fixed.
4.1.5
Optical amplifying platform It compensates optical signal power in long distance transmission with optical amplifying technology. Normally, it is located at the back and in front of the OM/OD platform, as well as in the middle of the li ne transmission. The optical amplifying part of ZXWM M920 employs C band EDFA in less than 40wavelength transmission. The optical amplifying platform of ZXWM M920 amplifIies the C band and L band respectively in 40-176-wavelength transmission. The amplifier types involve C band EDFA, L band EDFA, C+L band RAMAN/EDFA hybrid amplifiers.
4.1.6
Monitoring platform 1
It collects, handles and reports various information like platform configurations, alarms and performance to the NMS.
2
It receives the commands sent by the NMS and transfers them to the target board.
3
It transmits the NMS information with the specified monitoring optical channel. The wavelength of the monitoring channel is 1510 nm at 100Mbit/s.
The NM Software System is introduced in chapter 4.3
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ZXWM M920 Product Description
4.2
Hardware Architecture ZXWM M920 consists of OTU sub-rack, OA sub-rack and TMUX sub-rack. The board positions of these sub-racks are described in the following.
4.2.1
Sub-rack The board arrangement of the sub-rack is shown in Fi gure 30, and numbers indicated are the slot numbers. Figure 30 Board Slot Arrangement of OTU Sub-rack
4.2.2
Board Description Table 13
40
Board Description
Board Name
Description
Remarks
OTU
2.5Gb/s Optical transponder unit
Transforms the 2.5Gb/s optical signals into electrical signals, then transform the electrical signals into the required optical signals complying with G.692.
OTUF
2.5Gb/s Optical transponder unit with the FEC function
Performs the same the functions as the OTU, and conducts forward error correction (FEC) coding/decoding.
EOTU10G
Enhanced 10Gb/s optical transponder unit with FEC/AFEC
Realizes G.709 recommendation compliant wavelength conversion of 10Gb/s optical signals in one channel,
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Board Name
Description
Remarks and conducts FEC/AFEC coding/decoding on the signal.
TST3
40Gb/s optical transponder unit with FEC/AFEC
Realizes STM256, OTU3 access, complaint with G.709 recommendation, supports wavelength conversion of 40Gb/s optical signals into one DWDM channel, and conducts FEC/AFEC coding/decoding on the signal.
MQT3
Multi 10G aggregation board
Realizes 4* STM64, 10GE LAN, OTU2, complaint with G.709 recommendation, and conducts FEC/AFEC coding/decoding on the signal
SRM41 SRM42
Sub-rate Multiplex Board
Realizes the multiplex/de-multiplex function of four STM-16 signals to one STM-64 signal.
Sub-rate multiplex Board
Realizes the multiplex/de-multiplex function of four STM-4/STM-1 signals to one STM-16 signal
GEM2
Gigabit Ethernet Multiplex Board
Multiplexes two IEEE802.3Z recommendation compliant standard GbE optical signals into one G.692-compliant optical signal.
GEMF
Gigabit Ethernet Multiplex Board with FEC function
Multiplexes two IEEE802.3Z recommendation compliant standard GbE into one G.692-compliant optical signal with FEC.
GEM8
Gigabit Ethernet Multiplex Board
Multiplexes eight IEEE802.3Z recommendation compliant standard GbE optical signals into one G.709-compliant optical signal.
Optical multiplex unit
Multiplex optical signals with different wavelengths to one fiber, and provides 8wave, 16-wave, 32-wave , 40-wave ,48wave and 80-wave multiplexers.
ODU
Optical de-multiplex unit
Separates optical signals of different channels in one fiber from each other, and provides 8-wave, 16-wave, 32-wave , 40wave ,48-wave and 80-wave demultiplexers.
OCI
Optical channel multiplex /de-multiplex interleaver board
Completes the multiplex/de-multiplex of the C band or L band channel interleave at the same time, applying in 80-wave system.
OBM
Broadband multiplex board
Multiplexes/de-multiplexes the C/L band signals and the 1510nm (1625nm) monitoring channel, applying in 160/176wave system.
EOBA
Enhanced Optical booster amplifier
It is equipped with the erbium-doped fiber amplifier (EDFA) to boost optical power of
OMU
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ZXWM M920 Product Description
Board Name
Description
Remarks signals. It is usually used at the transmitting end. It is equipped with the erbium-doped fiber
EOLA
Enhanced Optical line amplifier
amplifier (EDFA) to amplify optical signals. It is usually used at the optical relay segment. It is equipped with the erbium-doped fiber
EOPA
Enhanced Optical preamplifier
amplifier (EDFA) to pre-amplify optical signals. It is usually used at the r eceiving end.
EONA
Enhanced Optical node amplifier
It is equipped with the erbium-doped fiber amplifier (EDFA) to amplify optical signals. Feeds the Raman pump light to the
DRA
Distributed Raman amplifier
transmission fiber backward so as to achieve distributed amplification of the optical signal. The range of the amplified wavelength covers C Band and L Band.
Remote Pump Optical Amplifier RPOA
42
SOAD1
Optical add/drop multiplex Board of 1 Wavelength
SOAD2
Optical add/drop multiplex Board of 2 Wavelength
SOAD4
Optical add/drop multiplex board of 4 Wavelength
RPOA is new type optical amplification technology: the pump laser is put on OTM station, while gain unit is put on the indicated location of line optical fiber. When the pump light is transmitted through gain unit, it will be interacted with gain unit, thus realizes the amplification function to the signals.
Implements add/drop for 1 (channel/2 (channel/4 (channel, and pass-through wavelength.
WBU
Wavelength Blocking Unit
WBU (Wavelength Blocking Unit) board is configured in an ROADM (Reconfigurable Optical Add/Drop Multiplexer) subsystem to implement the reconfiguration of add/drop wavelengths. It makes the maintenance convenient when the add/drop wavelengths change.
WSU
Wavelength Selective Unit
WSU (Wavelength Selective Unit) board is configured in an ROADM (Reconfigurable Optical Add/Drop Multiplexer) subsystem to implement the
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Board Name
Description
Remarks reconfiguration of add/drop wavelengths. It makes the maintenance convenient when the add/drop wavelengths change.
SOP
OPM
Optical protection board
Provides 1+1 protection for the optical multiplex section or optical c hannel mainly in the #concurrent sending/optimum receiving$ mode.
Optical performance monitoring board
Provides optical performance monitoring function for each optical channel with measuring parameters including optical power, central wavelength and optical S/N ratio and reports the corresponding data to the NMS.
Optical Wavelength Monitor OWM
OWM could automatic detect the abnormal wavelength shift of the OTU, and send adjustment command to the aim OTU until the wavelength shift is in the normal range.
SOSC
Optical supervision channel board
Receives 1510nm optical supervision signals from the adjacent NE and sends them to the SNP after the optical-toelectrical conversion, then receives electrical signals from the SNP and sends them to the adjacent NE after the generation of the 1510nm optical signals with supervision information.
SNP
Node Processor
Collects and processes alarm and performance information of the local NE.
SDM
Supervision add/drop multiplexer
Provides the function of combining the main path optical signal and monitoring signal.
LAC
Line Attenuation Compensator
Includes NM-controlled attenuator, it is configured at the end of line to m ake remote adjustment according to line fiber attenuation change.
Variable attenuation MUX
Multiplex unit with channel power prebalance. With AWG+VOA technique, it adjusts attenuations of channels, and then multiplexes them into one channel for output via voltage or curr ent control. Configured at OTM site, it can independently adjust optical power of each channel for channel power prebalance.
VMUX
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ZXWM M920 Product Description
4.3
The NM Software System Structure ZXWM M920 implements software management via Unitrans ZXONM E300 Element Management Platform for Unix/Windows (ZXONM E300 for short). It can perform various management functions for faults, performance, security, configuration, and m aintenance of the system. Designs for ZXONM E300 are based on a four-l ayered structure including the equipment layer, the NE layer, the NE management layer and the subnet management layer. It can also provide the Corba interface for the network management layer. The hierarchical structure of ZXONM E300 is shown in Figure 31.
44
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ZXWM M920 Product Description
Figure 31 The Hierarchical Structure of the Element Management Software
NMS NML
NMS
Corba
Corba
GUI(Cient) F Subnet Manager 3
Subnet management layer
F
F
GUI(Cient)
GUI(Cient) F LMT
NE/Subnet Manager 2
NEL Qx
NE/Agent
ECC NE/Agent
NE/Agent
3
NE/Agent
ECC
ECC NE/Agent
NEL
4.3.1
ECC
ECC
ECC
MCU
Qx
GNE/Agent
ECC
S
NE/Subnet Manager n
...
Qx
ECC NE/Agent
F
f
GNE/Agent
Equipment layer
F
F
NE/Subnet Manager 1
GUI(Cient)
S
S
MCU
MCU
NE/Agent S
...
MCU
ECC
GNE/Agent
S MCU
S
3 3..
MCU
Hierarchical structure 1
The equipment layer (MCU-Manager Control Unit)
The functions of the equipment layer are: •
Monitoring alarm and performance status of boards
•
Receiving EMS commands
•
Controlling boards to implement certain operations
2
The NE layer, which is the Agent in the EMS
The functions of the NE layer are:
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ZXWM M920 Product Description
•
Managing each NE
•
Configuring each board when NE is powered on for initialization
•
Monitoring alarm and performance status of whole NEs under normal running conditions
•
Receiving and processing the monitoring commands of NE manager layer through gateway NE (GNE)
3
The NE management layer (Manager): controls and coordinates a series of NEs, including Manager, graphical user interf ace (GUI) and Local Maintenance Terminal (LMT).
The functions of the NE management layer are: •
The core of the NE manager layer is the Manager (or Server), which can manage multiple subnets, control and coordinate NE equipment.
•
GUI provides graphic user interfaces and converts the requirements of user management into the commands of the internal formats and sends them down to the Manager.
•
LMT simply combines GUI and Manager via controlling user rights and software functional parts, provides some of NE management functions for local NEs commissioning and maintenance.
4
The subnet management layer: its structure is similar to that of NE management layer, and the NEs configuration and maintenance commands are indirectly performed through NE m anagement layer.
The subnet management system sends a command to the NE management system, via which forwards it to the NE. After then, the NE responds to the subnet management system through the NE management system. In addition, it can provide the network management layer with the Corba interface.
4.3.2
2
Interface description
1
Qx interface:
As shown in Fig 32, it is the interface between the Agent and the Manager, i.e., the interface between the SNP board and the computer where the Manager program resides. It complies with the TCP/IP. 2
F interface:
As shown in Fig 32, it is the interface between the GUI and the Manager, i.e., the interface between the GUI and the computer where the Manager program resides. It complies with the TCP/IP. 3
46
f interface:
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ZXWM M920 Product Description
As shown in Fig 32, it is the interface between the Agent and LMT, i.e. the interface between the SNP board and the local maintenance terminal. On the l ocal maintenance terminal, related NM software is installed. This interface complies with the TCP/IP. 4
S interface:
As shown in Fig 32, it is the interface between Agent and MCU, i.e., the communication interface between the SNP board and other boards. S interface adopts the point-to-multipoint communication mode based on the HDLC communication mechanism. 5
ECC interface:
As shown in Fig 32, it is the interface between Agents, i.e. the communication interface between NEs. It uses DCC for communication, supports customized communication protocol and standard protocol at the same time, and implements bridge function on Agent. Please refer to the element management manuals for more details.
4.4
System Configuration ZXWM M920 can be configured as the optical terminal m ultiplexer (OTM), the optical add/drop multiplexer (OADM) and optical line amplifier (OLA).
4.4.1
Optical Terminal Multiplexer (OTM) The OTM can add/drop all the services to im plement the line terminal node function. As an OTM, the relationship between platforms is illustrated in Figure 32. Figure 32
Functional Blocks of the OTM
Service signal
Optical transfer platform
Service signal
Service convergent platform
M u l i g t p l e x i n
D e m u l t i p l e x i n g
Multiplexer/demultiplexer platform
4.4.2
Optical line (sending) Optical line (receiving) Optical amplifier platform Monitoring platform
Optical Add/Drop Multiplexer (OADM) The ZXWM M920 supports both the Fix ed Optical Add/Drop Multiplexer (FOADM) function and the Reconfigurable Optical Add/Drop Multiplexer (ROADM) function. FOADM: This function is used to add/drop fixed wavelengths.
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ZXWM M920 Product Description
ROADM: Wavelengths to be added/ dropped can be reconfigured. In addition, the port assignment function is available when ROADM is enabled. The following port assignment function is controlled via the EMS. In an ROADM node, optical signals with special wavelengths can be assigned to any drop ports and then dropped through these ports. The wavelengths of these signals meet the specification of the drop ports assigned for them. On the other hand, the wavelengths of optical signals input from different add ports can be converted into the wavelengths of those optical signals having been dropped i n the same node. After that, these optical signals are added at the node. 1
FOADM equipment
The FOADM can add/drop the specified fixed wavelengths services and pass straight through other services. As an FOADM, the relationship between platforms is illustrated in Figure 33. Figure 33
Functional Blocks of the FOADM
OA platform
ADM platform
Straight through
OA platform
OL (East)
OL (West)
Service convergence Service convergence platform platform
Monitoring platform
Monitoring platform
OT platform Service signal
Service signal
2
ROADM equipment
Take bidirectional ROADM equipment that adds/drops eight wavelengths as example. Figure 34#Figure 35 and Figure 36 ill ustrates the optical connection in the equipment configured with WBU board #WBM board and WSU board respectively.
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Figure 34
Optical Connection of ROADM Equipment with WBU Boards
OPA IN
EX OUT
EX IN
OBA
WB A1
OUT
WB
WBU OUT
OBA
A1
D1
WBU EX IN EX OUT
IN
D1
OPA
Figure 35 Optical Connection of ROADM Equipment with WBM Boards
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ZXWM M920 Product Description
Figure 36
4.4.3
Optical Connection of ROADM Equipment with WSU Boards
Optical Line Amplifier (OLA) The OLA is used to compensate the optical signal power for l ong distance transmission. As an OLA, the relationship between platforms is illustrated in Figure 37. Figure 37
OL (East)
Functional Blocks of the OLA
OA platform
in
out Monitoring platform
OL (West) out
in OA platform
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5
Technical Specifications This chapter introduces technical indices of ZXWM M920, including structure, power supply, performances of boards and the system component indices of OMU/ODU, OADM, OA and OTU etc.
5.1
Working Wavelength Requirements The working wavelength of the system strictly complies with the specific central wavelength and central frequency values used in the multi-channel system, as specified in the ITU-T Recommendation G.692 and G.694.1. 1
When ZXWM M920 is a C band 40-wavelength system at 100 GHz spacing, the wavelength allocation is listed in Table 14 .
Table 14
The Wavelength Allocation based on C band 40 CH/100 GHz Spacing
S. N.
Central Frequency (THz)
Wavelength (nm)
1
192.1
1560.61
2
192.2
1559.79
3
192.3
1558.98
4
192.4
1558.17
5
192.5
1557.36
6
192.6
1556.55
7
192.7
1555.75
8
192.8
1554.94
9
192.9
1554.13
10
193.0
1553.33
11
193.1
1552.52
12
193.2
1551.72
13
193.3
1550.92
14
193.4
1550.12
15
193.5
1549.32
16
193.6
1548.51
17
193.7
1547.72
18
193.8
1546.92
19
193.9
1546.12
20
194.0
1545.32
21
194.1
1544.53
22
194.2
1543.73
23
194.3
1542.94
24
194.4
1542.14
25
194.5
1541.35
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ZXWM M920 Product Description
S. N.
Central Frequency (THz)
Wavelength (nm)
26
194.6
1540.56
27
194.7
1539.77
28
194.8
1538.98
29
194.9
1538.19
30
195.0
1537.40
31
195.1
1536.61
32
195.2
1535.82
33
195.3
1535.04
34
195.4
1534.25
35
195.5
1533.47
36
195.6
1532.68
37
195.7
1531.90
38
195.8
1531.12
39
195.9
1530.33
40
196.0
1529.55
2
When ZXWM M920 is a C band 192-wavelength system at 25 GHz spacing, the wavelength allocation is listed in Table 15 .
Table 15
52
The Wavelength Allocation based on C/C+ band 192 CH/ 25 GHz Spacing
Nominal Central Wavelength (nm)
S. N. C50-2
Nominal Central Frequency (THz)
Nominal Central Wavelength (nm)
S. N. C50-1
Nominal Central Frequency (THz)
1
196.05
1529.16
1
196.075
1528.97
2
196.00
1529.55
2
196.025
1529.36
3
195.95
1529.94
3
195.975
1529.75
4
195.90
1530.33
4
195.925
1530.14
5
195.85
1530.72
5
195.875
1530.53
6
195.80
1531.12
6
195.825
1530.92
7
195.75
1531.51
7
195.775
1531.31
8
195.70
1531.90
8
195.725
1531.70
9
195.65
1532.29
9
195.675
1532.09
10
195.60
1532.68
10
195.625
1532.49
11
195.55
1533.07
11
195.575
1532.88
12
195.50
1533.47
12
195.525
1533.27
13
195.45
1533.86
13
195.475
1533.66
14
195.40
1534.25
14
195.425
1534.05
15
195.35
1534.64
15
195.375
1534.45
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Nominal Central Wavelength (nm)
S. N. C50-2
Nominal Central Frequency (THz)
Nominal Central Wavelength (nm)
S. N. C50-1
Nominal Central Frequency (THz)
16
195.30
1535.04
16
195.325
1534.84
17
195.25
1535.43
17
195.275
1535.23
18
195.20
1535.82
18
195.225
1535.63
19
195.15
1536.22
19
195.175
1536.02
20
195.10
1536.61
20
195.125
1536.41
21
195.05
1537.00
21
195.075
1536.81
22
195.00
1537.40
22
195.025
1537.20
23
194.95
1537.79
23
194.975
1537.59
24
194.90
1538.19
24
194.925
1537.99
25
194.85
1538.58
25
194.875
1538.38
26
194.80
1538.98
26
194.825
1538.78
27
194.75
1539.37
27
194.775
1539.17
28
194.70
1539.77
28
194.725
1539.57
29
194.65
1540.16
29
194.675
1539.96
30
194.60
1540.56
30
194.625
1540.36
31
194.55
1540.95
31
194.575
1540.76
32
194.50
1541.35
32
194.525
1541.15
33
194.45
1541.75
33
194.475
1541.55
34
194.40
1542.14
34
194.425
1541.94
35
194.35
1542.54
35
194.375
1542.34
36
194.30
1542.94
36
194.325
1542.74
37
194.25
1543.33
37
194.275
1543.13
38
194.20
1543.73
38
194.225
1543.53
39
194.15
1544.13
39
194.175
1543.93
40
194.10
1544.53
40
194.125
1544.33
41
194.05
1544.92
41
194.075
1544.72
42
194.00
1545.32
42
194.025
1545.12
43
193.95
1545.72
43
193.975
1545.52
44
193.90
1546.12
44
193.925
1545.92
45
193.85
1546.52
45
193.875
1546.32
46
193.80
1546.92
46
193.825
1546.72
47
193.75
1547.32
47
193.775
1547.12
48
193.70
1547.72
48
193.725
1547.52
49
193.65
1548.11
49
193.675
1547.92
50
193.60
1548.51
50
193.625
1548.31
51
193.55
1548.91
51
193.575
1548.71
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ZXWM M920 Product Description
54
Nominal Central Wavelength (nm)
S. N. C50-2
Nominal Central Frequency (THz)
Nominal Central Wavelength (nm)
S. N. C50-1
Nominal Central Frequency (THz)
52
193.50
1549.32
52
193.525
1549.11
53
193.45
1549.72
53
193.475
1549.52
54
193.40
1550.12
54
193.425
1549.92
55
193.35
1550.52
55
193.375
1550.32
56
193.30
1550.92
56
193.325
1550.72
57
193.25
1551.32
57
193.275
1551.12
58
193.20
1551.72
58
193.225
1551.52
59
193.15
1552.12
59
193.175
1551.92
60
193.10
1552.52
60
193.125
1552.32
61
193.05
1552.93
61
193.075
1552.73
62
193.00
1553.33
62
193.025
1553.13
63
192.95
1553.73
63
192.975
1553.53
64
192.90
1554.13
64
192.925
1553.93
65
192.85
1554.54
65
192.875
1554.34
66
192.80
1554.94
66
192.825
1554.74
67
192.75
1555.34
67
192.775
1555.14
68
192.70
1555.75
68
192.725
1555.55
69
192.65
1556.15
69
192.675
1555.95
70
192.60
1556.55
70
192.625
1556.35
71
192.55
1556.96
71
192.575
1556.76
72
192.50
1557.36
72
192.525
1557.16
73
192.45
1557.77
73
192.475
1557.57
74
192.40
1558.17
74
192.425
1557.97
75
192.35
1558.58
75
192.375
1558.38
76
192.30
1558.98
76
192.325
1558.78
77
192.25
1559.39
77
192.275
1559.19
78
192.20
1559.79
78
192.225
1559.59
79
192.15
1560.20
79
192.175
1560.00
80
192.10
1560.61
80
192.125
1560.40
81
192.05
1561.02
81
192.075
1560.81
82
192.00
1561.42
82
192.025
1561.22
83
191.95
1561.83
83
191.975
1561.62
84
191.90
1562.24
84
191.925
1562.03
85
191.85
1562.64
85
191.875
1562.44
86
191.80
1563.05
86
191.825
1562.84
87
191.75
1563.46
87
191.775
1563.25
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Nominal Central Wavelength (nm)
S. N. C50-2
Nominal Central Frequency (THz)
Nominal Central Wavelength (nm)
S. N. C50-1
Nominal Central Frequency (THz)
88
191.70
1563.87
88
191.725
1563.66
89
191.65
1564.27
89
191.675
1564.07
90
191.60
1564.68
90
191.625
1564.47
91
191.55
1565.09
91
191.575
1564.88
92
191.50
1565.5
92
191.525
1565.29
93
191.45
1565.91
93
191.475
1565.7
94
191.40
1566.32
94
191.425
1566.11
95
191.35
1566.73
95
191.375
1566.52
96
191.30
1567.14
96
191.325
1566.93
3
When ZXWM M920 is a C band 48/96-wavelength system at 100 GHz/50 GHz spacing, the wavelength allocation is listed in Table 16 .
Table 16
The Wavelength Allocation based on C/C+ band 48/96 CH/100 GHz/50 GHz Spacing
S. N.
Nominal Central Frequency (THz)
1
196.05
2
Nominal Central Wavelength (nm)
Nominal Central Wavelength (nm)
S. N.
Nominal Central Frequency (THz)
1529.16
49
193.65
1548.11
196.00
1529.55
50
193.60
1548.51
3
195.95
1529.94
51
193.55
1548.91
4
195.90
1530.33
52
193.50
1549.32
5
195.85
1530.72
53
193.45
1549.72
6
195.80
1531.12
54
193.40
1550.12
7
195.75
1531.51
55
193.35
1550.52
8
195.70
1531.90
56
193.30
1550.92
9
195.65
1532.29
57
193.25
1551.32
10
195.60
1532.68
58
193.20
1551.72
11
195.55
1533.07
59
193.15
1552.12
12
195.50
1533.47
60
193.10
1552.52
13
195.45
1533.86
61
193.05
1552.93
14
195.40
1534.25
62
193.00
1553.33
15
195.35
1534.64
63
192.95
1553.73
16
195.30
1535.04
64
192.90
1554.13
17
195.25
1535.43
65
192.85
1554.54
18
195.20
1535.82
66
192.80
1554.94
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ZXWM M920 Product Description
4
56
S. N.
Nominal Central Frequency (THz)
19
195.15
20
Nominal Central Wavelength (nm)
Nominal Central Wavelength (nm)
S. N.
Nominal Central Frequency (THz)
1536.22
67
192.75
1555.34
195.10
1536.61
68
192.70
1555.75
21
195.05
1537.00
69
192.65
1556.15
22
195.00
1537.40
70
192.60
1556.55
23
194.95
1537.79
71
192.55
1556.96
24
194.90
1538.19
72
192.50
1557.36
25
194.85
1538.58
73
192.45
1557.77
26
194.80
1538.98
74
192.40
1558.17
27
194.75
1539.37
75
192.35
1558.58
28
194.70
1539.77
76
192.30
1558.98
29
194.65
1540.16
77
192.25
1559.39
30
194.60
1540.56
78
192.20
1559.79
31
194.55
1540.95
79
192.15
1560.20
32
194.50
1541.35
80
192.10
1560.61
33
194.45
1541.75
81
192.05
1561.02
34
194.40
1542.14
82
192.00
1561.42
35
194.35
1542.54
83
191.95
1561.83
36
194.30
1542.94
84
191.90
1562.24
37
194.25
1543.33
85
191.85
1562.64
38
194.20
1543.73
86
191.80
1563.05
39
194.15
1544.13
87
191.75
1563.46
40
194.10
1544.53
88
191.70
1563.87
41
194.05
1544.92
89
191.65
1564.27
42
194.00
1545.32
90
191.60
1564.68
43
193.95
1545.72
91
191.55
1565.09
44
193.90
1546.12
92
191.50
1565.5
45
193.85
1546.52
93
191.45
1565.91
46
193.80
1546.92
94
191.40
1566.32
47
193.75
1547.32
95
191.35
1566.73
48
193.70
1547.72
96
191.30
1567.14
When ZXWM M920 is a C/C+ band 80-wavelength system at 50 GHz spacing, the wavelength allocation is listed in Table 17 .
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Table 17
The Wavelength Allocation based on C/C+ band 80 CH/100 GHz Spacing
S. N.
Nominal Central Frequency (THz)
1
196.05
2
Nominal Central Wavelength (nm)
Nominal Central Wavelength (nm)
S. N.
Nominal Central Frequency (THz)
1529.16
41
194.05
1544.92
196.00
1529.55
42
194.00
1545.32
3
195.95
1529.94
43
193.95
1545.72
4
195.90
1530.33
44
193.90
1546.12
5
195.85
1530.72
45
193.85
1546.52
6
195.80
1531.12
46
193.80
1546.92
7
195.75
1531.51
47
193.75
1547.32
8
195.70
1531.90
48
193.70
1547.72
9
195.65
1532.29
49
193.65
1548.11
10
195.60
1532.68
50
193.60
1548.51
11
195.55
1533.07
51
193.55
1548.91
12
195.50
1533.47
52
193.50
1549.32
13
195.45
1533.86
53
193.45
1549.72
14
195.40
1534.25
54
193.40
1550.12
15
195.35
1534.64
55
193.35
1550.52
16
195.30
1535.04
56
193.30
1550.92
17
195.25
1535.43
57
193.25
1551.32
18
195.20
1535.82
58
193.20
1551.72
19
195.15
1536.22
59
193.15
1552.12
20
195.10
1536.61
60
193.10
1552.52
21
195.05
1537.00
61
193.05
1552.93
22
195.00
1537.40
62
193.00
1553.33
23
194.95
1537.79
63
192.95
1553.73
24
194.90
1538.19
64
192.90
1554.13
25
194.85
1538.58
65
192.85
1554.54
26
194.80
1538.98
66
192.80
1554.94
27
194.75
1539.37
67
192.75
1555.34
28
194.70
1539.77
68
192.70
1555.75
29
194.65
1540.16
69
192.65
1556.15
30
194.60
1540.56
70
192.60
1556.55
31
194.55
1540.95
71
192.55
1556.96
32
194.50
1541.35
72
192.50
1557.36
33
194.45
1541.75
73
192.45
1557.77
34
194.40
1542.14
74
192.40
1558.17
35
194.35
1542.54
75
192.35
1558.58
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ZXWM M920 Product Description
S. N.
Nominal Central Frequency (THz)
36
194.30
37
Nominal Central Wavelength (nm)
S. N.
Nominal Central Frequency (THz)
1542.94
76
192.30
1558.98
194.25
1543.33
77
192.25
1559.39
38
194.20
1543.73
78
192.20
1559.79
39
194.15
1544.13
79
192.15
1560.20
40
194.10
1544.53
80
192.10
1560.61
5
When ZXWM M920 is a L/L+ band 80-wavelength system at 50 GHz spacing, the wavelength allocation is listed in Table 18 .
Table 18
58
Nominal Central Wavelength (nm)
The Wavelength Allocation based on L/L+ band 80 CH/100 GHz Spacing
S. N.
Nominal Central Frequency (THz)
1
190.90
2
Nominal Central Wavelength (nm)
Nominal Central Wavelength (nm)
S. N.
Nominal Central Frequency (THz)
1570.42
41
188.90
1587.04
190.85
1570.83
42
188.85
1587.46
3
190.80
1571.24
43
188.80
1587.88
4
190.75
1571.65
44
188.75
1588.30
5
190.70
1572.06
45
188.70
1588.73
6
190.65
1572.48
46
188.65
1589.15
7
190.60
1572.89
47
188.60
1589.57
8
190.55
1573.30
48
188.55
1589.99
9
190.50
1573.71
49
188.50
1590.41
10
190.45
1574.13
50
188.45
1590.83
11
190.40
1574.54
51
188.40
1591.26
12
190.35
1574.95
52
188.35
1591.68
13
190.30
1575.37
53
188.30
1592.10
14
190.25
1575.78
54
188.25
1592.52
15
190.20
1576.20
55
188.20
1592.95
16
190.15
1576.61
56
188.15
1593.37
17
190.10
1577.03
57
188.10
1593.79
18
190.05
1577.44
58
188.05
1594.22
19
190.00
1577.86
59
188.00
1594.64
20
189.95
1578.27
60
187.95
1595.06
21
189.90
1578.69
61
187.90
1595.49
22
189.85
1579.10
62
187.85
1595.91
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5.2
S. N.
Nominal Central Frequency (THz)
23
189.80
24
Nominal Central Wavelength (nm)
Nominal Central Wavelength (nm)
S. N.
Nominal Central Frequency (THz)
1579.52
63
187.80
1596.34
189.75
1579.93
64
187.75
1596.76
25
189.70
1580.35
65
187.70
1597.19
26
189.65
1580.77
66
187.65
1597.62
27
189.60
1581.18
67
187.60
1598.04
28
189.55
1581.60
68
187.55
1598.47
29
189.50
1582.02
69
187.50
1598.89
30
189.45
1582.44
70
187.45
1599.32
31
189.40
1582.85
71
187.40
1599.75
32
189.35
1583.27
72
187.35
1600.17
33
189.30
1583.69
73
187.30
1600.60
34
189.25
1584.11
74
187.25
1601.03
35
189.20
1584.53
75
187.20
1601.46
36
189.15
1584.95
76
187.15
1601.88
37
189.10
1585.36
77
187.10
1602.31
38
189.05
1585.78
78
187.05
1602.74
39
189.00
1586.20
79
187.00
1602.17
40
188.95
1586.62
80
186.95
1603.57
System Component Indices The schematic diagram of the system is illustrated in Figure 38, and meaning of each component and interface is listed in Table 19 .
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Figure 38 Schematic Diagram of the DWDM System
TX1 TX2
TXn
f 1 Rm1 S1 f 2 Rm2 S2
SD1 R1 MPI - S OM / OA
RX1
MPI - R OD / OA
OA R'
S'
f n Rmn Sn
SD2 R2
RX2
SDn Rn
RXn
OSC RX1 RX2
RXn
R1 SD1 R2 SD2
Rn SDn
Table 19
60
OD / OA
S'
OA
R'
MPI - R
MPI - S
OM / OA
f1 S1 f2 S2 fn Sn
TX1 TX2
TXn
Meaning of Components and Interfaces of the DWDM System
Code
Description
TX1 ) TXn
The OTU for multiplexing paths 1 ) n
F1 ) fn
The wavelength occupied by multiplexing paths 1 ) n (in unit of frequency)
S1 ) Sn
Reference points on the optical fibre at the output optical connectors of the transmitters for channels 1...n respectiv ely
RM1 ) RMn
Reference points on the optical fibre j ust before the OM/OA input optical connectors for channels 1...n respectively
OM
Optical Multiplexer
OA
Optical amplifier
OD
Optical demultiplexer
MPI
Main optical channel
MPI-S
Reference point on the optical fibre just after the OM/OA output optical connector
MPI-R
Reference point on the optical fi bre justbefore the OA/OD input optical connector
R"
Reference pointon the optical fibre just before the line OA input optical connector
S"
Reference point just after the line OA output optical connector
SD1 ) SDn
Reference points at the OA/OD output optical connectors
R1 ) Rn
Reference points at the inputs to the receiver optical connectors.
RX1 ) RXn
The OTU for multiplexing paths 1 ) n
SOSC
Optical supervisory channel
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5.3
OMU/ODU Performance Parameters The indices of OM and OM for ZXWM M920 are listed below: 1
OMU
The OMU indices of ZXWM M920 are listed in Table 20 .
Table 20
OMU Performance Parameters
Specifications (32 Channels) Item
Specifications (40 Channels)
Unit
Specificati ons (48 Channels)
Specifi cation s (80 Chann els)
Coupler Type
AWG Type
Film Filter Type
AWG Type
Film Filter Type
AWG Type
AWG Type
Insertion loss
dB
<17
<10
<10
<10
<10
<10
<10
Max. difference of insertion losses of channels
dB
<3
<3
<3
<3
<3
<3
<3
Channel spacing
GHz
100
100
100
100
100
100
50
Light reflectance
dB
>40
>40
>40
>40
>40
>40
>40
1529 ~1561 /1570 ~1605
1529 ~1561 /1570 ~1605
1529 ~1561 /1570 ~1605
1529 ~1568 /1570 ~1605
1529 ~1561 /1570 ~1605
Working wavelength range
nm
1529 ~1561
1529 ~1561 /1570 ~1605
Polarizationrelated loss
dB
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
Polarizationmode dispersion
ps
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
Temperature characteristic s
nm/° C
---
<0.005
---
<0.005
---
---
---
Note: 1529 nm ~ 1561 nm corresponds to the C band OMU, while 1570nm ~ 1605 nm corresponds to the L band OMU. 2
VMUX
Configured at OTM site, VMUX can independently adjust optical power of each channel to pre-weight channel power. The performance parameters of ZXWM M920 VMUX are listed in Table 21 .
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ZXWM M920 Product Description
Table 21
The VMUX Performance Parameters
Item
Unit
Specification
Number of channels
---
40/48
Channel spacing
GHz
100
Working wavelength range
nm
1529 ~ 1568 / 1570 ~ 1605
-1dB bandwidth
nm
> 0.2
Insertion loss (@0dB VOA)
dB
<8
Polarization-mode dispersion
ps
0.5
Polarization-related loss
dB
0.8
Reflection factor
dB
> 40
Channel adjustment range
dB
0~10
VOA adjustment accuracy
dB
< 0.5
3
ODU
The performance parameters of ZXWM M920 ODU are listed in Table 22 .
Table 22
Item
Unit
ODU Performance Parameters
Specificatio ns (48 Channels)
Specif icatio ns (80 Chann els)
Specifications (32 Channels)
Specifications (40 Channels)
AWG Type
Film Filter Type
AWG Type
Film Filter Type
AWG Type
AWG Type
Insertio n loss
dB
< 10
< 10
< 10
< 10
< 10
< 10
Max. differen ce of insertio n losses of channel s
dB
<3
<3
<3
<3
<3
<3
Channe l spacing
GHz
100
100
100
100
100
50
Light reflecta nce
dB
> 40
> 40
> 40
> 40
> 40
> 40
nm
1529~15 61 / 1570~16
1529~1561 / 1570~1625
1529~1561 / 1570~1605
1529~156 1 /1570~160 5
1529~1568 / 1570~1605
1529~ 1561 / 1570~
Workin g wavele ngth range
62
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ZXWM M920 Product Description
Item
Unit
Specifications (32 Channels)
Specifications (40 Channels)
AWG Type
AWG Type
Film Filter Type
Film Filter Type
Specificatio ns (48 Channels)
Specif icatio ns (80 Chann els)
AWG Type
AWG Type
05
1605
Separat ion of adjacen t channel s
dB
> 25
> 25
> 25
> 25
> 25
> 25
Separat ion of nonadjacen t channel s
dB
> 30
> 30
> 30
> 30
> 30
> 30
Polariza tionrelated loss
dB
< 0.5
< 0.5
< 0.5
< 0.5
< 0.5
< 0.5
Polariza tionmode dispersi on
ps
< 0.5
< 0.5
< 0.5
< 0.5
< 0.5
< 0.5
Temper ature charact eristics
nm/°C
< 0.005
---
< 0.005
---
< 0.005
< 0.005
-1dB bandwi dth
nm
> 0.3
> 0.3
> 0.3
> 0.3
> 0.3
> 0.3
Note: 1529 nm ~ 1561 nm corresponds to the C band ODU, while 1570 nm ~ 1605 nm corresponds to the L band ODU. 4
50 GHz / 100 GHz Inter-leaver
The performance parameters of 50 GHz /100 GHz Inter-leaver for ZXWM M920 are listed in Table 23 .
Table 23
50 GHz / 100 GHz Inter-leaver Performance Parameters
Item
Unit
Specification
C band wavelength range
nm
1529 ~ 1568
L band wavelength range
nm
1570 ~ 1605
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ZXWM M920 Product Description
5
Item
Unit
Specification
Input optical power range
dBm
< +23
Input wavelength spacing
GHz
100
Output wavelength spacing
GHz
50
Insertion loss
dB
<3
Max. difference of insertion losses of channels
dB
<2
Light reflectance
dB
> 40
Separation of adjacent channels
dB
> 25
Separation of non-adjacent channels
dB
> 25
Polarization-related loss
dB
< 0.5
Polarization-mode dispersion
ps
< 0.5
-1dB bandwidth
nm
> 0.1
25 GHz / 50 GHz Inter-leaver
The performance parameters of 25 GHz /50 GHz Inter-leaver for ZXWM M920 are listed in Table 24 .
Table 24
6
25 GHz /50 GHz Inter-leaver Performance Parameters
Item
Unit
Specification
C band wavelength range
THz
191.125~196.10
Input optical power range
dBm
< +23
Input wavelength spacing
GHz
50
Output wavelength spacing
GHz
25
Insertion loss
dB
<3
Max. difference of insertion losses of channels
dB
<2
Return Loss
dB
> 40
Isolation of adjacent channels
dB
> 25
Isolation of non-adjacent channels
dB
> 30
Polarization dependent loss (PDL)
dB
< 0.5
Polarization mode dispersion (PMD)
ps
< 0.2
-1dB bandwidth
nm
> 20
C/L band broadband OMU/ODU
The performance parameters of the C /L band broadband OMU/ODU for ZXWM M920 are listed in Table 25 .
Table 25
64
C/L Band OMU/ODU Performance Parameters
Item
Unit
Specification
C band wavelength range
nm
1529 ~ 1568
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Item
Unit
Specification
L band wavelength range
nm
1570 ~ 1605
C band insertion loss
dB
< 1.5
L band insertion loss
dB
< 1.5
Light reflectance
dB
> 40
Polarization-related loss
dB
< 0.5
Polarization-mode dispersion
ps
< 0.5
7
OMU80 & OMU40 (coupler) performance
The performance parameters of the OMU80 &OMU40 (coupler) for ZXWM M920 are listed in Table 26 .
Table 26
ODU80 & OMU40!coupler "Performance Parameters
Item
Unit
Parameter OMU80
Parameter OMU40
Central Wavelength
nm
1550
1550
Pass-band
nm
±40
±40
Splitter Ratio
%
1:80
1:40
1×80
1×40
dB
<22.71
<18.91
dB
>3.5
>2.02
Optical Return Loss
dB
>45
>45
Directivity
dB
>50
>50
Polarization Sensitivity
dB
<0.7
<0.6
TDL(Temperature Dependent Loss)
dB
<0.7
<0.6
Operation Temperature
4
-15~ +70
-15~ +70
Storage Temperature
4
-40~ +85
-40~ +85
Configuration Type Insertion Loss Insertion Loss
uniformity
Notes: 1 Insertion loss includes connectors. 2 Insertion Uniformity should be less than 2dB within 1550±5nm, while 3dB within1529-1568nm. 8
PDU
Table 27
performance
The performance parameters of PDU-4-X are listed in following table
Item
ZTE Confidential Proprietary
Unit
Indices
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PDU-4-X
65
ZXWM M920 Product Description
Item
Unit
Indices
PDU-4-X
1529~1561!C-band" wavelength range
Nm
1529~1568!CE-band" 1570~1605!L-band"
Insertion Loss
dB
<8.0
Polarization-related loss
dB
<0.4
Optical Return Loss
dB
>40
Table 28
INx5Ox-1/2/3/4
The performance parameters of PDU-5-X are listed in following table
Item
Indices !PDU-5-X"
Unit
1529~1561!C-band" wavelength range
Nm
1529~1568!CE-band" 1570~1605!L-band"
INx5Ox1/2/3/4
dB
<12.0
INx5Dx
dB
<4.0
Polarization-related loss
dB
<0.5
Optical Return Loss
dB
>40
Insertion Loss
Table 29
The performance parameters of PDU-8-X are listed in following table
Item
Unit
Indices
wavelength range
Nm
1529~1561!C-band"
PDU-8-X
1529~1568!CE-band" 1570~1605!L-band" Insertion Loss
dB
<11.0
Polarization-related loss
dB
<0.5
Optical Return Loss
dB
>40
Table 30
INx5Ox1/2/3/4/5/6/7/8
The performance parameters of PDU-9-X are listed in following table
Item
Unit
Indices
wavelength range
Nm
1529~1561!Cband"
PDU-9-X
1529~1568!CEband" 1570~1605!L-band" Insertion Loss
66
INx5Ox1/2/3/4/5/6/7/8
dB
<15.0
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dB
<4.0
Polarization-related loss
dB
<0.5
Optical Return Loss
dB
>40
INx5Dx
Table 31
The performance parameters of PDU-16-X are listed in following table
Item
Unit
wavelength range
Nm
Indices PDU-16-X 1529~1561!Cband" 1529~1568 !CE-band" 1570~1605!Lband"
Insertion Loss
5.4
dB
<14.0
Polarization-related loss
dB
<0.5
Optical Return Loss
dB
>40
INx5Ox1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16
WSUA/WSUD & WBU Performance Parameters The performance parameters of WBU are listed in Table 32 .
Table 32
WBU Performance Parameters
Item
Unit
Specification
Optical Spectrum range
nm
1529~1568
Channel spacing
GHz
Channel quantity
-
40/48 80/96
A1/A2-OUT
dB
<1.5
IN-D1/D2
dB
<4
EXIN-OUT
dB
<14
IN-EXOUT
dB
<4
Attenuation tunable range
dB
0~15
Attenuation tunable precision(ER)
dB
<0.5
Blocked extinction ratio
dB
>35
Return loss
dB
>40
Maximum total input optical power
dBm
625
Maximum Single-channel input optical power
dBm
616
Straight insertion loss
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ZXWM M920 Product Description
The performance parameters of WSUA/WSUD for ZXWM M920 are listed in Table 33 .
Table 33
WSUA/WSUD Performance Parameters
Item
Unit
Optical Spectrum range
nm
Channel spacing
GHz
Channel quantity
-
Specification WSUD
WSUA
1529~1561
1529~1561
100
100
50
50
40
40
80
80
A1-OUT
dB
<2
<2
A2-OUT
dB
<10
<10
IN-D1~D8
dB
<6
<6
EXIN-OUT
dB
<9
<6
dB
<6 !WSUD/MA1" <16 !WSUD/MA2"
<9 !WSUA/MD1" <16 !WSUA/MD2"
Attenuation tunable range
dB
0~15
0~15
Attenuation tunable precision(ER)
dB
<0.5
<0.5
Blocked extinction ratio
dB
>35
>35
Return loss
dB
>40
>40
Maximum total input optical power
dBm
625
625
Maximum Single-channel input optical power
dBm
616
616
Straight insertion loss
IN-EXOUT
The performance parameters of WBM are listed in Table 34 .
Table 34
WBM Performance Parameters
Item
Unit
Specification
Optical spectrum range
nm
1529-1561
Channel spacing
GHz
100
Channel quantity
-
40
dB
<8
IN-DROP
dB
<7
EXIN-OUT
dB
<13
IN-EXOUT
dB
<3
dB
0-15
An-OUT (n=1-40) insertion loss
Attenuation adjustment range
68
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ZXWM M920 Product Description
Item
5.5
Unit
Specification
Attenuation adjustment precision
dB
< (0.5 or &10% of the adjustment precision, select the larger one)
Return loss
dB
>40
OADM Performance Parameters The OADM of ZXWM M920 is used to add/drop 4 or 8-wavelength signals. Take the C band 8-wavelength OADM for example, its m ain performance parameters are listed in Table 35 .
Table 35
OADM Performance Parameters
Name
Specification
Unit
Central frequency range
191.3~196.0
THz
Central channel range
1529.16 ~1567.14
nm
- 0.5dB bandwidth
> 0.2
nm
- 20dB bandwidth
<1.2
nm
Channel spacing
100
GHz
Number of add/drop channels
8/4
---
Between In-Drop and adjacent channel
> 25
dB
Between In-Drop and non- adjacent channel
>35
dB
Between In-Midl and Drop
>14
dB
Between In-Out and Drop
> 28
dB
Optical return loss
>40
dB
Directivity
> 60
dB
In-drop
<4.0
dB
Add-out
<4.0
dB
In-out
<6.0
dB
Working relative humidity
5 ~95
%RH
Max. allowed optical power
<500
mW
Isolatio n
Insertio n loss
5.6
OA Parameters To smoothly upgrade 2.5 Gbit/s system to 10 Gbit/s system, ZXWM M920 OA is compatible with both 2.5 Gbit/s and 10 Gbit/s system. 1
The EOBA (Enhanced Optical Booster Amplifier)
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ZXWM M920 Product Description
•
40-channel C/L band optical booster amplifiers
As shown in Table 36 .the single channel power is applicable to 40-channel system.
Table 36
Item
Unit
C/L band EOBA Performance Parameters of the 40-channel
Indices (40-channel system) EOBA17/17
EOBA27/26
EOBA22/20
EOBA20/20
EOBA24/24
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605(L band)
Working wavelength range
nm
1529~1561 (C band) 1570~1605 (L band)
Total input power range
dBm
- 32 ~0
- 32 ~- 1
- 32 ~- 2
- 32 ~0
- 32 ~0
Input power range of the channel
dBm
- 32 ~- 16
- 32 ~- 17
- 32~ - 18
- 32 ~- 16
- 32 ~- 16
Output power range of the channel
dBm
1~4
10~13
4~7
4~7
8~11
Total output power range
dBm
1~17
10~26
4~20
4~20
8~24
Max. total output power
dBm
17
26
20
20
24
Noise coefficient
dB
<6
<6
<6
<6
<6
Polarizationrelated loss
dB
<0.5
<0.5
<0.5
<0.5
<0.5
Pump leak at input
dBm
<- 30
<- 30
<- 30
<- 30
<- 30
Pump leak at output
dBm
<- 30
<- 30
<- 30
<- 30
<- 30
Input reflectance
dB
>40
>40
>40
>40
>40
Output reflectance
dB
>40
>40
>40
>40
>40
Channel gain
dB
17
27
22
20
24
Max. bearable reflectance at input
dB
>30
>30
>30
>30
>30
Max. bearable reflectance at output
dB
>30
>30
>30
>30
>30
Gain flatness
dB
&1
&1
&1
&1
1
Gain
ms
<10
<10
<10
<10
<10
70
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ZXWM M920 Product Description
Item
Unit
Indices (40-channel system) EOBA17/17
EOBA27/26
EOBA22/20
EOBA20/20
EOBA24/24
<0.5
<0.5
<0.5
<0.5
<0.5
response time when channels are added or reduced (stable state) Polarizationmode dispersion
ps
•
80-channel C/L band optical booster amplifiers
As shown in Table 37 , the single channel power is applicable to 80-channel system.
Table 37
Item
Unit
C/L band EOBA Performance Parameters of the 80-channel
Indices (80-channel system) EOBA17/17
EOBA27/26
EOBA22/20
EOBA20/20
EOBA24/24
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605(L band)
Working wavelength range
nm
1529~1561 (C band) 1570~1605 (L band)
Total input power range
dBm
- 32 ~ 0
- 32 ~ - 1
- 32 ~ - 2
- 32 ~ 0
- 32 ~ 0
Input power range of the channel
dBm
- 32 ~ - 19
- 32 ~ - 20
- 32 ~ - 21
- 32 ~ - 19
- 32 ~ - 19
Output power range of the channel
dBm
-2~1
7~10
1~4
1~4
5~8
Total output power range
dBm
-2~17
7~26
1~20
1~20
5~24
Max. total output power
dBm
17
26
20
20
24
Noise coefficient
dB
<6
<6
<6
<6
<6
Polarizationrelated loss
dB
<0.5
<0.5
<0.5
<0.5
<0.5
Pump leak at input
dBm
<- 30
<- 30
<- 30
<- 30
<- 30
Pump leak at output
dBm
<- 30
<- 30
<- 30
<- 30
<- 30
Input reflectance
dB
>40
>40
>40
>40
>40
Output reflectance
dB
>40
>40
>40
>40
>40
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ZXWM M920 Product Description
Item
Unit
Channel gain
Indices (80-channel system) EOBA17/17
EOBA27/26
EOBA22/20
EOBA20/20
EOBA24/24
dB
17
27
22
20
24
Max. bearable reflectance at input
dB
>30
>30
>30
>30
>30
Max. bearable reflectance at output
dB
>30
>30
>30
>30
>30
Gain flatness
dB
&1
&1
&1
&1
&1
Gain response time when channels are added or reduced (stable state)
ms
<10
<10
<10
<10
<10
Polarizationmode dispersion
ps
<0.5
<0.5
<0.5
<0.5
<0.5
•
48-channel C band optical booster amplifiers
As shown in Table 38 , the single channel power is applicable to 48-channel system.
Table 38
72
C band EOBA Performance Parameters of the 48-channel
Item
Unit
Operating wavelength range
Indices (48-channel system) EOBA17/17
EOBA23/21
EOBA26/24
EOBA28/26
nm
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
Total input power range
dBm
-32 to 0
-32 to -2
-32 to -2
-32 to -2
Channel input power range
dBm
-32 to -17
-32 to -19
-32 to -19
-32 to -19
Channel output power range
dBm
0 to 3
4 to 7
7 to 10
9 to 12
Total output power range
dBm
0 to 17
4 to 21
7 to 24
9 to 26
Maximum total output power
dBm
17
21
24
26
Noise figure
dB
<6
<6
<6
<6
Polarization dependent loss
dB
<0.5
<0.5
<0.5
<0.5
2009 ZTE Corporation. All rights reserved.
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ZXWM M920 Product Description
Item
Unit
Pump leakage at input
Indices (48-channel system) EOBA17/17
EOBA23/21
EOBA26/24
EOBA28/26
dBm
<-30
<-30
<-30
<-30
Pump leakage at output
dBm
<-30
<-30
<-30
<-30
Input return loss
dB
>40
>40
>40
>40
Output return loss
dB
>40
>40
>40
>40
Channel gain
dB
17
23
26
28
Allowed Maximum input reflectance
dB
>30
>30
>30
>30
Allowed maximum output reflectance
dB
>30
>30
>30
>30
Gain flatness
dB
&1
&1
&1
&1
Gain response time while adding/reducing channels (stable status)
ms
<10
<10
<10
<10
Polarization mode dispersion
ps
<0.5
<0.5
<0.5
<0.5
•
96-channel C band optical booster amplifiers
As shown in Table 39 , the single channel power is applicable to 96-channel system.
Table 39
C band EOBA Performance Parameters of the 96-channel
Item
Unit
Operating wavelength range
Indices (96-channel system) EOBA17/17
EOBA23/21
EOBA26/24
EOBA28/26
nm
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
Total input power range
dBm
-32 to -3
-32 to -5
-32 to -5
-32 to -5
Channel input power range
dBm
-32 to -20
-32 to -22
-32 to -22
-32 to -22
Channel output power range
dBm
-3 to 0
1 to 4
4 to 7
6 to 9
Total output power range
dBm
-3 to 17
1 to 21
4 to 24
6 to 26
Maximum total output power
dBm
17
21
24
26
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ZXWM M920 Product Description
Item
Unit
Noise figure
Indices (96-channel system) EOBA17/17
EOBA23/21
EOBA26/24
EOBA28/26
dB
<6
<6
<6
<6
Polarization dependent loss
dB
<0.5
<0.5
<0.5
<0.5
Pump leakage at input
dBm
<-30
<-30
<-30
<-30
Pump leakage at output
dBm
<-30
<-30
<-30
<-30
Input return loss
dB
>40
>40
>40
>40
Output return loss
dB
>40
>40
>40
>40
Channel gain
dB
17
23
26
28
Allowed Maximum input reflectance
dB
>30
>30
>30
>30
Allowed maximum output reflectance
dB
>30
>30
>30
>30
Gain flatness
dB
&1
&1
&1
&1
Gain response time while adding/reducing channels (stable status)
ms
<10
<10
<10
<10
Polarization mode dispersion
ps
<0.5
<0.5
<0.5
<0.5
2
The EOLA (Enhanced Optical Line Amplifier)
•
40/80-channel C/L band optical line amplifiers
The performance parameters of the 40/80-channel C/L band EOLA are listed in Table 40 .
Table 40
Item
Unit
EOLA Performance Parameters of the 40/80-channel System
Indices (40-channel system) EOLA22/20
EOLA27/20
EOLA32/20
EOLA22/20
EOLA27/20
EOLA32/20
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
1529~1561 (C band) 1570~1605 (L band)
-29 to -7
-34 to -12
-27 to -2
-32 to -7
-37 to -12
Working wavelength range
nm
1529~1561 (C band) 1570~1605 (L band)
Total input power range
dBm
-24 to -2
74
Indices (80-channel system)
2009 ZTE Corporation. All rights reserved.
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ZXWM M920 Product Description
Item
Unit
Input power range of the channel
Indices (40-channel system)
Indices (80-channel system)
EOLA22/20
EOLA27/20
EOLA32/20
EOLA22/20
EOLA27/20
EOLA32/20
dBm
-24 to -18
-29 to -23
-34 to -28
-27 to -21
-32 to -26
-37 to -31
Output power range of the channel
dBm
1-7
1-7
1-7
-2 to 4
-2 to 4
-2 to 4
Total output power range
dBm
1-20
1-20
1-20
-2 to 20
-2 to 20
-2 to 20
Max. total output power
dBm
20
20
20
20
20
20
Noise coefficient
dB
<6
<6
<6
<6
<6
<6
Polarizationrelated loss
dB
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
Pump leak at input
dBm
<-30
<-30
<-30
<-30
<-30
<-30
Pump leak at output
dBm
<-30
<-30
<-30
<-30
<-30
<-30
Input reflectance
dB
>40
>40
>40
>40
>40
>40
Output reflectance
dB
>40
>40
>40
>40
>40
>40
Channel gain
dB
22
27
32
22
27
32
Max. bearable reflectance at input
dB
>30
>30
>30
>30
>30
>30
Max. bearable reflectance at output
dB
>30
>30
>30
>30
>30
>30
Gain flatness
dB
1
1
1
1
1
1
Gain response time when channels are added or reduced (stable state)
Ms
<10
<10
<10
<10
<10
<10
Polarizationmode dispersion
Ps
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3
EOPA (Optical preamplifier)
•
40-channel C/L band optical preamplifiers
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ZXWM M920 Product Description
The performance parameters of the 40-channel C/L band optical preamplifiers are listed in Table 41 .
Table 41
Optical Preamplifier Performance Parameters of the 40-channel System
Item
Unit
Channels allocation
EOPA17/17
EOPA22/17
EOPA27/17
nm
1529~1561/ 1570~1605
1529~1561/ 1570~1605
1529~1561/ 1570~1605
Total input power range
dBm
-35~3
-35~-2
-35~-7
Input power range of the channel
dBm
-35~-16
-35~-21
-35~-26
Output power range of the channel
dBm
-2 to 4
-2 to 4
-2 to 4
Total output power range
dBm
-2 to 17
-2 to 17
-2 to 17
Max. total output power
dBm
17
17
17
Noise coefficient
dB
<5.5
<5.5
<5.5
Polarizationrelated loss
dB
<0.5
<0.5
<0.5
Pump leak at input
dBm
<-30
<-30
<-30
Pump leak at output
dBm
<-30
<-30
<-30
Input reflectance
dB
>40
>40
>40
Output reflectance
dB
>40
>40
>40
Channel gain
dB
17
22
27
Max. bearable reflectance at input
dB
>30
>30
>30
Max. bearable reflectance at output
dB
>30
>30
>30
dB
&1
&1
&1
ms
<10
<10
<10
Gain flatness Gain response time when channels are
76
Indices (40-channel system)
2009 ZTE Corporation. All rights reserved.
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ZXWM M920 Product Description
Item
Unit
Indices (40-channel system) EOPA17/17
EOPA22/17
EOPA27/17
<0.5
<0.5
<0.5
added or reduced (stable state) Polarizationmode dispersion •
ps
80-channel C/L band optical preamplifiers
The performance parameters of the 80-channel C/L band optical preamplifiers are listed in Table 42 .
Table 42
Optical Preamplifier Performance Parameters of the 80-channel System
Item
Unit
Channels allocation
Indices (80-channel system) EOPA17/17
EOPA22/17
EOPA27/17
nm
1529~1561/ 1570~1605
1529~1561/ 1570~1605
1529~1561/ 1570~1605
Total input power range
dBm
-35~0
-35~-5
-35~-10
Input power range of the channel
dBm
-35~-19
-35~-24
-35~-29
Output power range of the channel
dBm
-5to 1
-5 to 1
-5 to 1
Total output power range
dBm
-5 to 17
-5 to 17
-5 to 17
Max. total output power
dBm
17
17
17
Noise coefficient
dB
<5.5
<5.5
<5.5
Polarizationrelated loss
dB
<0.5
<0.5
<0.5
Pump leak at input
dBm
<-30
<-30
<-30
Pump leak at output
dBm
<-30
<-30
<-30
Input reflectance
dB
>40
>40
>40
Output reflectance
dB
>40
>40
>40
Channel gain
dB
17
22
27
Max. bearable
dB
>30
>30
>30
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ZXWM M920 Product Description
Item
Indices (80-channel system)
Unit
EOPA17/17
EOPA22/17
EOPA27/17
dB
>30
>30
>30
dB
&1
&1
&1
Gain response time when channels are added or reduced (stable state)
ms
<10
<10
<10
Polarizationmode dispersion
ps
<0.5
<0.5
<0.5
reflectance at input Max. bearable reflectance at output Gain flatness
•
48-channel C band optical preamplifiers
The performance parameters of the 48-channel C band optical preamplifiers are listed in Table 43 .
Table 43
78
Optical Preamplifier Performance Parameters of the 48-channel System
Item
Unit
Operating wavelength range
Indices (48-channel system) EOPA17/17
EOPA22/17
EOPA27/17
nm
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
Total input power range
dBm
-35 to 0
-35 to -5
-35 to -10
Channel input power range
dBm
-35 to -17
-35 to -22
-35 to -27
Channel output power range
dBm
0 to 3
0 to 3
0 to 3
Total output power range
dBm
0 to 17
0 to 17
0 to 17
Maximum total output power
dBm
17
17
17
Noise figure
dB
<5.5
<5.5
<5.5
Polarization dependent loss
dB
<0.5
<0.5
<0.5
Pump leakage at input
dBm
<-30
<-30
<-30
2009 ZTE Corporation. All rights reserved.
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ZXWM M920 Product Description
•
Item
Unit
Pump leakage at output
Indices (48-channel system) EOPA17/17
EOPA22/17
EOPA27/17
dBm
<-30
<-30
<-30
Input return loss
dB
>40
>40
>40
Output return loss
dB
>40
>40
>40
Channel gain
dB
17
22
27
Allowed maximum input reflectance
dB
>30
>30
>30
Allowed maximum output reflectance
dB
>30
>30
>30
Gain flatness
dB
&1
&1
&1
Gain response time while adding/ reducing channels (stable status)
ms
<10
<10
<10
Polarization mode dispersion
ps
<0.5
<0.5
<0.5
96-channel C band optical preamplifiers
The performance parameters of the 96-channel C band optical preamplifiers are listed in Table 44 .
Table 44
Optical Preamplifier Performance Parameters of the 96-channel System
Item
Unit
Operating wavelength range
Indices (96-channel system) EOPA17/17
EOPA22/17
EOPA27/17
nm
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
Total input power range
dBm
-35 to -3
-35 to -8
-35 to -13
Channel input power range
dBm
-35 to -20
-35 to -25
-35 to -30
Channel output power range
dBm
-3 to 0
-3 to 0
-3 to 0
Total output power range
dBm
-3 to 17
-3 to 17
-3 to 17
Maximum total output power
dBm
17
17
17
Noise figure
dB
<5.5
<5.5
<5.5
Polarization dependent loss
dB
<0.5
<0.5
<0.5
Pump leakage at input
dBm
<-30
<-30
<-30
Pump leakage at
dBm
<-30
<-30
<-30
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ZXWM M920 Product Description
Item
Unit
Indices (96-channel system) EOPA17/17
EOPA22/17
EOPA27/17
output Input return loss
dB
>40
>40
>40
Output return loss
dB
>40
>40
>40
Channel gain
dB
17
22
27
Allowed maximum input reflectance
dB
>30
>30
>30
Allowed maximum output reflectance
dB
>30
>30
>30
Gain flatness
dB
&1
&1
&1
Gain response time while adding/ reducing channels (stable status)
ms
<10
<10
<10
Polarization mode dispersion
ps
<0.5
<0.5
<0.5
4
EONA (Enhanced Optical Node Amplifier)
•
40/80 channel C Enhanced Optical Node Amplifier
The performance parameters of the 40/80-channel C/L band optical Node amplifiers are listed in Table 45 .
Table 45
Item
Unit
EONA Performance Parameters of the 40/80-channel System
Indices (40-channel system)
Indices (80-channel system)
EONA25/20
EONA33/20
EONA27/24
EONA25/20
EONA33/20
EONA27/24
1529~1567
1529~1567
1529~1567
1529~1567
1529~1567
1529~1567
!C-band" 1570~1605
!C-band" 1570~1605
!C-band" 1570~1605
!C-band" 1570~1605
!C-band" 1570~1605
!C-band" 1570~1605
!L-band"
!L-band"
!L-band"
!L-band"
!L-band"
!L-band"
Working wavelength range
nm
Total input power range
dBm
- 32~0
- 32~- 8
- 32~2
- 35~0
- 35~- 8
- 35~2
Input power range of the channel
dBm
- 32~- 16
- 32~- 24
- 32~- 14
- 35~- 19
- 35~- 27
- 35~- 17
Output power range of the channel
dBm
1~7
1~7
8~11
-2~4
-2~4
5~8
Total output power range
dBm
1~20
1~20
8~24
-2~20
-2~20
5~24
Max. total output power
dBm
20
20
24
20
20
24
Noise
dB
20~22: 8.0
28~30: 6.5
22~24: 8.5
20~22: 8.0
28~30: 6.5
22~24: 8.5
80
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ZXWM M920 Product Description
Item
Unit
coefficient
Indices (40-channel system)
Indices (80-channel system)
EONA25/20
EONA33/20
EONA27/24
EONA25/20
EONA33/20
EONA27/24
22~25: 7.0 25~30: 6.5
30~38: 6.0
24~27: 7.5 27~32: 6.5
22~25: 7.0 25~30: 6.5
30~38: 6.0
24~27: 7.5 27~32: 6.5
Polarizationrelated loss
dB
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
Pump leak at input
dBm
<- 30
<- 30
<- 30
<- 30
<- 30
<- 30
Pump leak at output
dBm
<- 30
<- 30
<- 30
<- 30
<- 30
<- 30
Input reflectance
dB
>40
>40
>40
>40
>40
>40
Output reflectance
dB
>40
>40
>40
>40
>40
>40
Channel gain
dB
25
33
27
25
33
27
Max. bearable reflectance at input
dB
>27
>27
>27
>27
>27
>27
Max. bearable reflectance at output
dB
>27
>27
>27
>27
>27
>27
Gain flatness
dB
71
71
71
71
71
71
Gain response time when channels are added or reduced (stable state)
ms
<10
<10
<10
<10
<10
<10
Polarizationmode dispersion
ps
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
•
48/96-channel C Enhanced Optical Node Amplifier
The performance parameters of the 48/96-channel C band optical Node amplifiers are listed in Table 46 .
Table 46
Item
Unit
Operating wavelength range
nm
EONA Performance Parameters of the 48/96-channel System
Indices (48-channel system))
Indices (96-channel system))
EONA25/21
EONA33/21
EONA27/24
EONA25/21
EONA33/21
EONA27/24
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
1529-1568 (C-band)
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ZXWM M920 Product Description
Indices (48-channel system))
Indices (96-channel system))
EONA25/21
EONA33/21
EONA27/24
EONA25/21
EONA33/21
EONA27/24
dBm
-35 to 1
-35 to -7
-35 to 2
-35 to -2
-35 to -10
-35 to -1
Channel input power range
dBm
-35 to -16
-35 to -24
-35 to -15
-35 to -19
-35 to -27
-35 to -18
Channel output power range
dBm
4 to 7
4 to 7
7 to 10
-2 to 4
-2 to 4
4 to 7
Total output power range
dBm
4 to 21
4 to 21
7 to 24
-2 to 21
-2 to 21
4 to 24
Maximum total output power
dBm
21
21
24
21
21
24
Noise figure
dB
20~22: 8.0 22~25: 7.0 25~30: 6.5
28~30: 6.5 30~38: 6.0
22~24: 8.5 24~27: 7.5 27~32: 6.5
20~22: 8.0 22~25: 7.0 25~30: 6.5
28~30: 6.5 30~38: 6.0
22~24: 8.5 24~27: 7.5 27~32: 6.5
Polarization dependent loss
dB
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
Pump leakage at input
dBm
<-30
<-30
<-30
<-30
<-30
<-30
Pump leakage at output
dBm
<-30
<-30
<-30
<-30
<-30
<-30
Input return loss
dB
>40
>40
>40
>40
>40
>40
Output return loss
dB
>40
>40
>40
>40
>40
>40
Channel gain
dB
25
33
27
25
33
27
Allowed maximum input reflectance
dB
>27
>27
>27
>27
>27
>27
Allowed maximum output reflectance
dB
>27
>27
>27
>27
>27
>27
Gain flatness
dB
&1
&1
&1
&1
&1
&1
Gain response time while adding/reducing channels (stable status)
ms
<10
<10
<10
<10
<10
<10
Polarization mode dispersion
ps
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
Item
Unit
Total input power range
5
EDFA+RAMAN amplifier performance parameters
The DRA board of ZXWM M920 adopts the EDFA+RAMAN technology to amplify optical signals. The main performance parameters are listed in Table 47 .
82
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Table 47
6
Performance Parameters of EDFA+RAMAN Amplifier
Item
Unit
Specification
Working wavelength range
Nm
1529 ~ 1561 (C band) 1570 ~ 1605 (L band)
Max. total output power
dBm
+ 20
Noise coefficient
dB
<3
Polarization-related gain
dB
< 0.5
Input reflectance
dB
>40
Output reflectance
dB
>40
Max. bearable reflectance at input
dB
>30
Max. bearable reflectance at output
dB
>30
Gain flatness
dB
± 1
Gain response time when channels are added or reduced (stable state)
Ms
< 10
Polarization-mode dispersion
Ps
< 0.5
RAMAN amplifier performance parameters are listed in Table 48 .
Table 48
Performance Parameters of RAMAN amplifier
Item
Unit
Type
Parameters Inverse distributed pump
Pump wavelength and quantity
nm/piece
C:2~3#L:2~3
Pump power
dBm
<29
Total output power
dBm
12
Type of output connector
SC/UPC! APC"
C, L and C+L gain (G652)
dB
10/10/10
C, L and C+L gain (LEAF)
dB
12/12/12
C, L and C+L gain (TW RS)
dB
13/13/13
C, L and C+L equivalent noise figure (G652)
dB
0/0/0
C, L and C+L equivalent noise figure (LEAF)
dB
-1/-1/-1
C, L and C+L equivalent noise figure (TW RS)
dB
-1.5/-1.5/-1.5
Associated polarization loss
dB
<0.5
Temperature feature
pm/°C
<500
Note: C band amplifier module pump wavelength: 1421.5/1455.0nm and 1425/1440/1456nm; L band amplifier module pump wavelength: 1439.0/1495.0nm;
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7
RPOA amplifier performance parameters are listed in Table 49 .
Table 49
5.7
Performance Parameters of RPOA amplifier
Item
RPOA with GFF subsystem
RPOA without GFF subsystem
Working wavelength range
1529~1561nm
1546~1561nm
Noise coefficient
<7dB
<7dB
Gain
14820dB
10826dB
Gain flatness
<2dB!1872dB"
<2dB!16926dB"
Total input power range
-448-19dBm
-448-19dBm
Total output power range
-3081dBm
-3487dBm
Working temperature range
#-108 -20865*C !RGU" 60*C!RPU"
#-20865*C !RGU" 10860*C!RPU"
Storage temperature range
-40885*C
-40885*C
OTU Interface Indices Line codes of OTU tributary/line optical interfaces employ NRZ, which are respectively compliant with ITU-T G.707 and G.709. 1
The interface indices of 2.5 Gbit/s OTU at the transmitting end of ZXWM M920
The interface indices of 2.5 Gbit/s OTU at the transmitting end of ZXWM M920 are listed in Table 50 .
Table 50
The Interface Indices of 2.5 Gbit/s OTU at the Transmitting End of the ZXWM M920
Item
Unit
Parameter
S-point parameters at the OTU i nput end Type of Receiver
---
PIN
dBm
-18
Max. reflection of Receiver
dB
-27
Overload power
dBm
0
Input signals wavelength range
nm
1280~1565
-12
Receiving sensitivity (BER≤10
)
Sn point parameters at the OTU output end Type of nominal light source
Spectral characteristics
Central frequency
84
---
MQW-DFB
Max. (20dB spectral width
nm
0.2
Min. side mode suppression ratio
dB
35
Nominal central frequency
THz
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Central frequency deviation
GHz
Max.
dBm
0
Min.
dBm
-10
Chirp modulus
---
0.15
Min. extinction ratio
dB
+10
Dispersion holding value
ps/nm
12800/3200
Eye pattern mask
---
In compliance with ITU-T Recommendation G.957
Mean transmission power
2
≤ ±20 ≤ ±5
(100 GHz spacing)
(50 GHz spacing)
The interface indices of 2.5 Gbit/s OTU for the regenerator of the transmitting end of ZXWM M920
The interface indices of 2.5 Gbit/s OTU for the regenerator of ZXWM M920 are l isted in Table 51 .
Table 51
The Interface Indices of 2.5 Gbit/s OTU for the Regenerator
Item
Unit
Parameter
S-point parameters at the OTU i nput end Type of Receiver
---
APD
Receiving sensitivity (BER≤10 12 )
dBm
-25
Max. reflection of Receiver
dB
-27
Overload power
dBm
-9
Input signals wavelength range
nm
1280~1565
Sn point parameters at the OTU output end Type of nominal light source
Spectral characteristics
Central frequency
Mean transmission power Chirp modulus
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---
MQW-DFB
Max. -20dB spectral width
nm
0.2
Min. side mode suppression ratio
dB
35
Nominal central frequency
THz
Central frequency deviation
GHz
Max.
dBm
0
Min.
dBm
-10
---
0.15
191.3-196.05!C-band" 186.95-190.9!L-band" ≤ ±20 ≤ ±5
(100 GHz spacing)
(50 GHz spacing)
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ZXWM M920 Product Description
3
Item
Unit
Parameter
Min. extinction ratio
dB
+10
Dispersion holding value
ps/nm
12800
Eye pattern mask
---
In compliance with ITU-T Recommendation G.957
The interface indices of 2.5 Gbit/s OTU at the receiving end of ZXWM M920
The interface indices of 2.5 Gbit/s OTU at the receiving end of ZXWM M920 are listed in Table 52 .
Table 52
The Interface Indices of 2.5 Gbit/s OTU at the Receiving End of the ZXWM M920
Item
Unit
Parameter
S-point parameters at the OTU i nput end Type of Receiver
---
APD
-12 Receiving sensitivity (BER≤10 )
dBm
-25
Max. reflection of Receiver
dB
-27
Overload power
dBm
-9
Input signals wavelength range
nm
1280 ~ 1565
Sn point parameters at the OTU output end Type of nominal light source
---
DFB
Max.
dBm
+3
Min.
dBm
-2
Min. extinction ratio
dB
8.2
Output wavelength range
nm
1500~1580
Eye pattern mask
---
In compliance with ITU-T Recommendation G.957
Mean transmission power
Note 1: Mean transmitting power includes two types: intra office interface. 4
long-haul optical interface and
The interface indices of 10 Gbit/s OTU at the transmitting end of ZXWM M920
The interface indices of 10 Gbit/s OTU at the transmitting end of ZXWM M920 are listed in Table 53 .
Table 53
The Interface Indices of 10 Gbit/s OTU at the Transmitting End of the ZXWM M920
Item
Unit
Parameter
S-point parameters at the OTU i nput end Type of Receiver Receiving sensitivity (BER≤10 12 )
86
--dBm
PIN/APD -14
PIN
-21
APD
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ZXWM M920 Product Description
Item
Unit
Parameter
Max. reflection of Receiver
dB
-27
Overload power
dBm
Input signals wavelength range
nm
0
PIN
-9
APD
1280 ~ 1625
Sn point parameters at the OTU output end Type of nominal light source
Spectral characteristics
---
MQW-DFB
Max. -20dB spectral width
nm
0.3
Min. side mode suppression ratio
dB
35
Nominal central frequency Central frequency
THz
191.30~196.075!CE-band" 186.95~190.90!L-band" + ±12.5 (spacing: 100 GHz)
Central frequency deviation
GHz
Max.
dBm
0
Min.
dBm
-5
Chirp modulus
---
0.3 ~ 0.7
Min. extinction ratio
dB
+10
Dispersion holding value
ps/nm
800
Eye pattern mask
---
In compliance with ITU-T Recommendation G.691
Mean transmission power
5
192.10~196.05!C-band"
+ ±5 (spacing: 50 GHz) + ±2.5G (spacing: 25 GHz)
The interface indices of 10 Gbit/s OTU for the regenerator of the transmitting end of ZXWM M920
The interface indices of 10 Gbit/s OTU for the regenerator of ZXWM M920 are li sted in Table 54 .
Table 54
The Interface Indices of 10 Gbit/s OTU for the Regenerator
Item
Unit
Parameter
S-point parameters at the OTU input end Type of Receiver
---
Receiving sensitivity (BER≤10 12 )
dBm
Max. reflection of Receiver
dB
Overload power
dBm
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PIN/APD -14
PIN
-21
APD
-27 0
PIN
-9
APD
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ZXWM M920 Product Description
Item
Unit
Parameter
Input signals wavelength range
nm
1280~1625
Sn point parameters at the OTU output end Type of nominal light source
Spectral characteristics
MQW-DFB
Max. -20dB spectral width
nm
0.3
Min. side mode suppression ratio
dB
35
Nominal central frequency
Central frequency
192.10~196.05!C-band" THz
191.30~196.075!CE-band" 186.95~190.90!L-band" + ±12.5 (spacing: 100 GHz)
Central frequency deviation
GHz
Max.
dBm
0
Min.
dBm
-5
Chirp modulus
---
0.3 ~ 0.7
Min. extinction ratio
dB
+10
Dispersion holding value
ps/nm
800
Eye pattern mask
---
In compliance with ITU-T Recommendation G.691
Mean transmission power
6
---
+ ±5 (spacing: 50 GHz) + ±2.5G (spacing: 25 GHz)
The interface indices of 10 Gbit/s OTU at the receiving end of ZXWM M920
The interface indices of 10 Gbit/s OTU at the receiving end of ZXWM M920 are li sted in Table 55 .
Table 55
The Interface Indices of 10 Gbit/s OTU at the Receiving End
Item
Unit
Parameter
S-point parameters at the OTU input end Type of Receiver
---
-12 Receiving sensitivity (BER≤10 )
dBm
Max. reflection of Receiver
dB
Overload power
dBm
Input signals wavelength range
nm
PIN/APD -14
PIN
-21
APD
-27 0
PIN
-9
APD
1280~1625
Sn point parameters at the OTU output end Type of nominal light source Mean
88
launched
Maximum
---
DFB
dBm
-1
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optical power (longdistance optical interface S-64.2a)
Minimum
dBm
-5
Mean launched optical power (longdistance optical interface S-64.2b)
Maximum
dBm
+2
Minimum
dBm
-1
Mean launched optical power (shortdistance optical interface I-64.2r)
Maximum
dBm
-1
Minimum
dBm
-5
Mean launched optical power (shortdistance optical interface I-64.1)
Maximum
dBm
-1
Minimum
dBm
-6
Min. extinction ratio
dB
10
Eye pattern mask
---
In compliance with ITU-T Recommendation G.691
Note 1: There are 2 options for the mean transmitting power, one is long-haul optical interface, while the other is the intra-office interface. 7
The interface indices of 40 Gbit/s OTU(DPSK) of ZXWM M920
at the transmitting end (80-channel)
The interface indices of 40 Gbit/s OTU(DPSK) at the transmitting end of ZXWM M920 are listed in Table 56 .
Table 56
The Interface Indices of 40 Gbit/s OTU(DPSK) at the Transmitting End of ZXWM M920
Item
Unit
Parameter
Modulation
-
DPSK
Bit rate
Gbps
43.018
Parameters of optical receiving port at client side (S point) Receiving sensitivity (BER≤1012)
dBm
-6
Overload power
dBm
+3
Reflection of Receiver
dB
-27
Input signals wavelength range
nm
1280 ~ 1565
Dispersion holding value
ps/nm
-10~+60
Parameters of optical transmitting port at line side ( Sn point) Type of nominal light source Spectral Max. -3dB characteristics spectral width Min. side mode
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---
MQW-DFB
GHz
45
dB
35
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ZXWM M920 Product Description
Item
Unit
Parameter
Modulation
-
DPSK
Bit rate
Gbps
43.018
suppression ratio
Central frequency
Mean transmission power
THz
Central frequency deviation
GHz
±1.5
Channel spacing
GHz
50
Max.
dBm
+3
Min.
dBm
0
---
No standard with DPSK
Eye pattern mask 8
192.10~196.05!C-band"
Nominal central frequency
191.30~196.075!CE-band"
The interface indices of 40 Gbit/s OTU(DPSK) for the regenerator of the transmitting end (80-channel) of ZXWM M920
The interface indices of 40 Gbit/s OTU(DPSK) for the regenerator of ZXWM M920 are listed in Table 57 .
Table 57
The Interface Indices of 40 Gbit/s OTU(DPSK) for the Regenerator
Item
Unit
Parameter
Modulation
-
DPSK
Bit rate
Gbps
43.018
S-point parameters at the OTU input end Receiving sensitivity (BER≤10 12 )
dBm
-18
Overload power
dBm
5
Reflection of Receiver
dB
>27
Input signals wavelength range
nm
1280~1565
Sn point parameters at the OTU output end Type of nominal light source
Spectral characteristics
Central frequency
90
---
MQW-DFB
Max. -20dB spectral width
nm
0.72
Min. side mode suppression ratio
dB
35
Nominal central frequency
THz
192.10~196.05
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Item
Unit
Parameter
Modulation
-
DPSK
Bit rate
Gbps
43.018
Central frequency deviation
GHz
±1.5
Max.
dBm
3
Min.
dBm
0
Dispersion holding value
ps/nm
-100~+1000
Eye pattern mask
---
No standard with DPSK
Mean transmission power
9
The interface indices of 40 Gbit/s OTU(DPSK) at the receiving end (80-channel) of ZXWM M920
The interface indices of 40 Gbit/s OTU(DPSK) at the receiving end of ZXWM M920 are listed in Table 58 .
Table 58
The Interface Indices of 40 Gbit/s OTU(DPSK) at the Receiving End
Item
Unit
Parameter
Modulation
-
DPSK
Bit rate
Gbps
43.018
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity (BER≤1012)
dBm
6 -18
Overload power
dBm
:+5
Reflection of Receiver
dB
>27
Input signals wavelength range
nm
1280 ~ 1565
Dispersion holding value (with TODC)
ps/nm
-100~+1000
Parameters of optical transmitting port at client side (R poi nt) Type of nominal light source
---
MQW-DFB
Min. side mode suppression ratio
dB
35
Min. extinction ratio
dB
8.2
Output signals wavelength range
nm
1280 ~ 1565
Mean transmission power
Max.
dBm
+3
Min.
dBm
0
---
G.959. NRZ 40G
Eye pattern mask 10
The interface indices of 40 Gbit/s OUT !DQPSK" of ZXWM M920 are listed in following Table 59 .
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Table 59 M920
The Interface Indices of 40 Gbit/s OUT (DQPSK) at the Transmitting End of ZXWM
Item
Unit
Parameter
Modulation
-
RZ-DQPSK
Bit rate
Gbps
43.018
Parameters of optical receiving port at client side (S point) Receiving sensitivity (BER≤1012)
dBm
-6
Overload power
dBm
+3
Reflection of Receiver
dB
-27
Input signals wavelength range
nm
1280 ~ 1565
Dispersion holding value
ps/nm
-10~+60
Parameters of optical transmitting port at line side ( Sn point) Type of nominal light source Spectral Max. -3dB characteristics spectral width
Central frequency
Mean transmission power
---
MQW-DFB
GHz
45
Min. side mode suppression ratio
dB
35
Nominal central frequency
THz
Central frequency deviation
GHz
±1.5
Channel spacing
GHz
50
Max.
dBm
+1
Min.
dBm
-10
---
No standard with DQPSK
Eye pattern mask
Table 60
192.10~196.05!C-band" 191.30~196.075!CE-band"
The Interface Indices of 40 Gbit/s OUT(DQPSK) for the Regenerator
Item
Unit
Parameter
Modulation
-
RZ-DQPSK
Bit rate
Gbps
43.018
Parameters of optical receiving port at li ne side
92
Receiving sensitivity (BER≤1012)
dBm
6 -18
Overload power
dBm
:+5
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Item
Unit
Parameter
Modulation
-
RZ-DQPSK
Bit rate
Gbps
43.018
Reflection of Receiver
dB
>27
Input signals wavelength range
nm
1280 ~ 1565
Dispersion holding value (with TODC)
ps/nm
-700~+700
Parameters of optical transmitting port at line side Type of nominal light source
Spectral characteristics
Central frequency
Mean transmission power
---
MQW-DFB
Max. -3dB spectral width
GHz
45
Min. side mode suppression ratio
dB
35
Nominal central frequency
THz
Central frequency deviation
GHz
±1.5
Channel spacing
GHz
50
Max.
dBm
+1
Min.
dBm
-10
---
No standard with DQPSK
Eye pattern mask
Table 61
192.10~196.05!C-band" 191.30~196.075!CE-band"
The Interface Indices of 40 Gbit/s OTU (DQPSK) at the receiving End
Item
Unit
Parameter
Modulation
-
RZ-DQPSK
Bit rate
Gbps
43.018
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity (BER≤1012)
dBm
6 -18
Overload power
dBm
:+5
Reflection of Receiver
dB
>27
Input signals wavelength range
nm
1280 ~ 1565
Dispersion holding value (with TODC)
ps/nm
-700~+700
Parameters of optical transmitting port at client side (R poi nt) Type of nominal light source
---
MQW-DFB
Min. side mode suppression ratio
dB
35
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ZXWM M920 Product Description
Item
Unit
Parameter
Modulation
-
RZ-DQPSK
Bit rate
Gbps
43.018
Min. extinction ratio
dB
8.2
Output signals wavelength range
nm
1280 ~ 1565
Mean transmission power
Max.
dBm
+3
Min.
dBm
0
---
G.959. NRZ 40G
Eye pattern mask 11
OTU jitter transfer characteristics
In ZXWM M920, the wavelength converter of the OTU has the same jitter transfer characteristics with that of SDH regenerative repeater, which is compliant with ITU-T G.825, G.958, and G.783 recommendation. 12
OTU input jitter tolerance
In ZXWM M920, the input jitter template that can be tolerated by the OTU input port is complaint with ITU-T G.825, G.958, and G.783 Recommendation.
5.8
Tributary overhead processing of convergence board Convergence board processes segment overhead bytes at each tributary in accordance with the following table. OTU2 signal at the li ne can supervise FEC error, uncorrectable error and SM-BIP8.
Table 62
Overhead byte at tributary segment
Processing mode
A1, A2
Frame localization bytes A1 and A2 at each tributary are regenerated to ensure proper frame encapsulation.
B1
B1 at each tributary are terminated.
B2
94
Tributary overhead processing of convergence board
If B2 at the line are not modified at multiplexing segment, bit error information of B2 will be transmitted transparently. Otherwise, the de-multiplexer will write the information into B2 at related tributary.
D1~D12
They ensure transparency of DCC channel at each tributary.
E1#E2
They ensure transparency of order wire channel at each tributary, that is, transparency of E1 and E2.
F1
It ensures transparency of F byte at each tributary.
J0
It can supervise J0 at each tributary and ensure transparent transmission.
K1#K2
After multiplexed and de-multiplexed by transparent sub-rate multiplexer, APS byte K1 and K2 at each tributary retain accuracy
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of original state, transparent sub-rate multiplexer do not affect services protection at each tributary. When S1 at each tributary is terminated, new clock is calculated again and used. Line interface of transparent sub-rate multiplexer should support SSM function (processed as SDH equipment).
S1
5.9
Service Convergence parameters This section describes the specifications of convergence boards, including SRM41 SRM42MQT3GEM2GEMFGEM8DSADSAFDSAE and SMU.
Table 63
The parameters of SRM41
Item
Unit
Specification
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
Wavelength area of input signals
nm
-14 (PIN) -21 (APD) >27 0 (PIN) -9 (APD) 1250-1620
Parameters of optical transmitting port at line side (Sn point)
Spectral characteristics
Maximum (20 dB bandwidth
nm
0.3
Minimum side mode compression ratio (SMCR)
dB
35
Nominal central frequency
192.10~196.05!C-band" THz
186.95~190.90!L-band"
Central frequency Central frequency offset
191.30~196.075!CE-band"
GHz
+ ±12.5 (spacing: 100 GHz) + ±5 (spacing: 50 GHz) + ±2.5G (spacing: 25 GHz)
Mean launched power
dBm
-5 to 0
Minimum extinction ratio
dB
10
Dispersion tolerance
ps/nm
800
-
Compliance with ITU-T G.959.1
Eye diagram
Parameters of optical receiving port at cli ent side (S point) Receiving sensitivity
dBm
-18 (I-16) -18 (S-16) -27 (L-16.1) -28 (L-16.2)
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ZXWM M920 Product Description
Item
Unit
Specification -27 (L-16.3)
Receiver reflection
dB
>27 -3 (I-16)
Overload power
dBm
0 (S-16) -9 (L-16)
Wavelength area of input signals
nm
1250-1620
Parameters of optical transmitting port at client side (R point) -10 to -3 (I-16) Mean launched power
dBm
-5 to 0 (S-16) -2 to +3 (L-16)
96
Minimum extinction ratio
dB
8.2
Eye diagram
-
Compliant with ITU-T G.957
2009 ZTE Corporation. All rights reserved.
ZTE Confidential Proprietary
ZXWM M920 Product Description
Table 64
Specification of SRM42 Board
Item
Unit
Specification
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
Wavelength area of input signals
nm
-18 (PIN) -28 (APD) >27 0 (PIN) -9 (APD) 1250-1620
Parameters of optical transmitting port at line side (Sn point)
Spectral characteristics
Maximum (20 dB bandwidth
nm
Minimum side mode compression ratio (SMCR)
dB
0.2 (EA) 0.4 (DM) 35 192.10~196.05!C-band"
Central frequency
Nominal central frequency
THz
191.30~196.075!CEband" 186.95~190.90!L-band"
GHz
+ ±12.5 (spacing: 100 GHz) + ±5 (spacing: 50 GHz)
Mean launched power
dBm
-10 to 0
Minimum extinction ratio
dB
10 (EA) 8.2 (DM)
Dispersion tolerance
ps/nm
12800 (EA) 3200 (DM)
Eye diagram
-
Compliance with ITU-T G.957
Central frequency offset
Parameters of optical receiving port at cli ent side (S point) -23 (I-4) -18 (S-4) Receiving sensitivity
dBm
-28 (L-4) -23 (I-1) -28 (S-1) -34 (L-1)
Receiver reflection
dB
>27 (S-4.2) >14 (L-4.1) >27 (L-4.2)
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ZXWM M920 Product Description
Item
Unit
Specification >14 (L-4.3) >25 (L-1.2) NA (others) -8 (I-4) -8 (S-4)
Overload power
dBm
-8 (L-4) -8 (I-1) -8 (S-1) -10 (L-1)
Wavelength area of input signals
nm
1250-1620
Parameters of optical transmitting port at client side (R point) -15 to -8 (I-4) -15 to -8 (S-4) Mean launched power
dBm
-3 to +2 (L-4) -15 to -8 (I-1) -15 to -8 (S-1) -5 to 0 (L-1) 8.2 (I-4) 8.2 (S-4)
Minimum extinction ratio
dB
10 (L-4) 8.2 (I-1) 8.2 (S-1) 10 (L-1)
Eye diagram
Table 65
The parameters of
-
Compliance with ITU-T G.957
MQT3(DPSK)
Item
Unit
Specification
Modulation
-
DPSK
Bit rate
Gbps
43.018
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity
dBm
6-18
Receiver reflection
dB
>27
Overload power
dBm
:+5 192.10~196.05!C-band"
Wavelength area of input signals
nm
191.30~196.075!CE-band" 186.95~190.90!L-band"
98
2009 ZTE Corporation. All rights reserved.
ZTE Confidential Proprietary
ZXWM M920 Product Description
Item
Unit
Specification
Modulation
-
DPSK
Bit rate
Gbps
43.018
Parameters of optical transmitting port at line side (Sn point)
Spectral characteristics
Central frequency
Maximum (20 dB bandwidth
Ghz
90
Minimum side mode compression ratio (SMCR)
dB
35 192.10~196.05!C-band"
Nominal central frequency
THz
Central frequency offset
GHz
191.30~196.075!CE-band" 186.95~190.90!L-band" ±1.5
Mean launched power
dBm
+3 to +5
Dispersion tolerance (with TODC)
ps/nm
-100~+1000
-
Compliance with G.8251
Eye diagram
ITU-T
Parameters of optical receiving port at cli ent side (S point) -14 (I64.1) -16 (S64.2b) Receiving sensitivity
dBm
-14 (10GBASE-LR/LW" -16 (10GBASE-ER/EW" >14 (I64.1) >27 (S64.2b) >14 (10GBASE-LR/LW"
Receiver reflection
dB
>27 (10GBASE-ER/EW" 0 (I64.1)
Overload power
dBm
-1 (S64.2b) 0 (10GBASE-LR/LW" -1 (10GBASE-ER/EW"
Wavelength area of input signals
nm
1280-1625
Parameters of optical transmitting port at client side (R point) -6~-1 (I64.1) Mean launched power
dBm
-1~2 (S64.2b) -6~-1 (10GBASE-LR/LW" -1~2 (10GBASE-ER/EW"
Minimum extinction ratio
dB
6 (I64.1) 8.2 (S64.2b) 6 (10GBASE-LR/LW"
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ZXWM M920 Product Description
Item
Unit
Specification
Modulation
-
DPSK
Bit rate
Gbps
43.018 8.2 (10GBASE-ER/EW"
Eye diagram
-
Compliant with ITU-T G.691
Item
Unit
Specification
Modulation
-
RZ-DQPSK
Bit rate
Gbps
43.018
Table 66
The parameters of
MQT3 !DQPSK"
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity
dBm
6-18
Receiver reflection
dB
>27
Overload power
dBm
:+5
Wavelength area of input signals
nm
192.10~196.05!C-band" 191.30~196.075!CE-band"
Parameters of optical transmitting port at line side (Sn point)
Spectral characteristics
Central frequency
Maximum (3 dB bandwidth
Ghz
45
Minimum side mode compression ratio (SMCR)
dB
35
Nominal central frequency
THz
Central frequency offset
GHz
192.10~196.05!C-band" 191.30~196.075!CE-band" ±1.5
Mean launched power
dBm
-10 to +1
Dispersion tolerance (with TODC)
ps/nm
-700~+700
Eye diagram
-
No standard with DQPSK
Parameters of optical receiving port at cli ent side (S point) -14 (I64.1) -16 (S64.2b) Receiving sensitivity
dBm
-14 (10GBASE-LR/LW" -16 (10GBASE-ER/EW" >14 (I64.1) >27 (S64.2b) >14 (10GBASE-LR/LW"
100
Receiver reflection
dB
>27 (10GBASE-ER/EW"
Overload power
dBm
0 (I64.1)
2009 ZTE Corporation. All rights reserved.
ZTE Confidential Proprietary
ZXWM M920 Product Description
Item
Unit
Specification
Modulation
-
RZ-DQPSK
Bit rate
Gbps
43.018 -1 (S64.2b) 0 (10GBASE-LR/LW" -1 (10GBASE-ER/EW"
Wavelength area of input signals
nm
1280-1565
Parameters of optical transmitting port at client side (R point) -6~-1 (I64.1) Mean launched power
dBm
-1~2 (S64.2b) -6~-1 (10GBASE-LR/LW" -1~2 (10GBASE-ER/EW" 6 (I64.1) 8.2 (S64.2b) 6 (10GBASE-LR/LW"
Minimum extinction ratio
dB
8.2 (10GBASE-ER/EW"
Eye diagram
-
Compliant with ITU-T G.691
Table 67
Specification of GEM2/GEMF Board
Item
Unit
Specification
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
Wavelength area of input signals
nm
-18 (PIN) -25 (APD) >27 0 (PIN) -9 (APD) 1250-1620
Parameters of optical transmitting port at line side (Sn point)
Spectral characteristics
Maximum (20 dB bandwidth
nm
Minimum side mode compression ratio (SMCR)
dB
0.2 (EA) 0.4 (DM) 35 192.10~196.05!C-band"
Central frequency
Nominal central frequency
191.30~196.075!CEband" 186.95~190.90!L-band"
Central frequency offset
ZTE Confidential Proprietary
THz
GHz
+ ±12.5 (spacing: 100 GHz) + ±5 (spacing: 50 GHz)
2009 ZTE Corporation. All rights reserved.
101
ZXWM M920 Product Description
Item
Unit
Specification
Mean launched power
dBm
-10 to 0
Minimum extinction ratio
dB
10 (EA) 8.2 (DM)
Dispersion tolerance
ps/nm
12800 (EA) 3200 (DM)
Eye diagram
-
Compliance with ITU-T G.957
Parameters of optical receiving port at cli ent side (S point) -17 (1000BASE-SX) Receiving sensitivity
dBm
-19 (1000BASE-LX) -20 (1000BASE-LH1) -22 (1000BASE-ZX) 0 (1000BASE-SX)
Overload power
dBm
-3 (1000BASE-LX) -3 (1000BASE-LH1) -3 (1000BASE-ZX)
Parameters of optical transmitting port at client side (R point) -9.5 to -3 (1000BASE-SX) Mean launched power
dBm
-11 to -3 (1000BASE-LX) -4 to 0 (1000BASE-LH1) -2 to +3 (1000BASE-ZX)
Table 68
Specification of GEM8 Board
Item
Unit
Specification
Parameters of optical receive port at line side (Rn point) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
Wavelength area of input signals
nm
-14 (PIN) -21 (APD) >27 0 (PIN) -9 (APD) 1250-1620
Parameters of optical transmit port at line side (Sn point) Spectral characteristics
Maximum (20 dB bandwidth
nm
0.3
Minimum side mode compression ratio (SMCR)
dB
35 192.10~196.05!C-band"
Central frequency
Nominal central frequency
THz
191.30~196.075!CEband" 186.95~190.90!L-band"
102
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ZXWM M920 Product Description
Item Central frequency offset
Unit
Specification
GHz
+ ±12.5 (spacing: 100 GHz) + ±5 (spacing: 50 GHz) + ±2.5G (spacing: 25 GHz)
Mean launched power
dBm
-5 to 0
Minimum extinction ratio
dB
10
Dispersion tolerance
ps/nm
800
-
Compliance with ITU-T G.959.1
Eye diagram
Parameters of optical receive port at client side (S point) Receiving sensitivity
dBm
Overload power
dBm
-17 (1000BASE-SX) -19 (1000BASE-LX) 0 (1000BASE-SX) -3 (1000BASE-LX)
Parameters of optical transmit port at client side (R point) Mean launched power
Table 69
dBm
-9.5 to -3 (1000BASE-SX) -11 to -3 (1000BASE-LX)
Specification of DSA Board
Item
Unit
Specification
Parameters of optical receive port at line side (Rn point) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
Wavelength area of input signals
nm
-18 (PIN) -25 (APD) >27 0 (PIN) -2 (APD) 1250-1620
Parameters of optical transmit port at line side (Sn point)
Spectral characteristic
Maximum (20 dB bandwidth
nm
0.2 (EA) 0.4 (DM)
Minimum side mode compression ratio (SMCR)
dB
35 192.10~196.05!C-band"
Central frequency
Nominal central frequency
191.30~196.075!CEband" 186.95~190.90!L-band"
Central frequency offset
ZTE Confidential Proprietary
THz
GHz
+ ±12.5 (spacing: 100 GHz) + ±5 (spacing: 50 GHz)
2009 ZTE Corporation. All rights reserved.
103
ZXWM M920 Product Description
Item
Unit
Specification
Mean launched power
dBm
-10 to 0
Minimum extinction ratio
dB
10 (EA) 8.2 (DM)
Dispersion tolerance
ps/nm
12800 (EA)/3200 (DM)
Eye diagram
-
Compliance with ITU-T G.957
Parameters of optical receive port at client side (S point) -17 (1000BASE-SX) -19 (1000BASE-LX) -20 (1000BASE-LH1) Receiving sensitivity
dBm
-22 (1000BASE-ZX) -25 (100-SM-LL-L) -20 (100-SM-LL-I) -13 (100-M5-SL-I) 0 (1000BASE-SX) -3 (1000BASE-LX) -3 (1000BASE-LH1)
Overload power
dBm
-3 (1000BASE-ZX) -3 (100-SM-LL-L) -3 (100-SM-LL-I) -1.3 (100-M5-SL-I)
Parameters of optical transmit port at client side (R point) -9.5 to -3 (1000BASE-SX) -11 to -3 (1000BASE-LX) -4 to 0 (1000BASE-LH1) Mean launched power
dBm
-2 to +3 (1000BASE-ZX) -9 to -3 (100-SM-LL-L) -12 to -3 (100-SM-LL-I) -7.3 to +1.3 (100-M5-SL-I)
Table 70
Specification of DSAF Board
Item
Unit
Specification
Parameters of optical receiving port at li ne side (Rn point) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
104
2009 ZTE Corporation. All rights reserved.
-21 (PIN) -25 (APD) >27 0 (PIN) -9 (APD)
ZTE Confidential Proprietary
ZXWM M920 Product Description
Item
Unit
Specification
Wavelength area of input signals
nm
1250-1620
Parameters of optical transmitting port at line side (Sn point)
Spectral characteristics
Maximum (20 dB bandwidth
nm
Minimum side mode compression ratio (SMCR)
dB
0.2 (EA) 0.5 (DM) 30 192.10~196.05!C-band"
Central frequency
Nominal central frequency
191.30~196.075!CEband"
THz
186.95~190.90!L-band" GHz
+ ±12.5 (spacing: 100 GHz) + ±5 (spacing: 50 GHz)
Mean launched power
dBm
-10 to 7
Minimum extinction ratio
dB
10 (EA) 8.2 (DM)
Dispersion tolerance
ps/nm
12800 (EA) 6500 (DM)
Eye diagram
-
Compliance with ITU-T G.957
Central frequency offset
Parameters of optical receiving port at cli ent side (S point) -17 (1000BASE-SX) Receiving sensitivity
dBm
-19 (1000BASE-LX) -20 (1000BASE-LH1) -22 (1000BASE-ZX) 0 (1000BASE-SX)
Overload power
dBm
-3 (1000BASE-LX) -3 (1000BASE-LH1) -3 (1000BASE-ZX)
Parameters of optical transmitting port at client side (R point) -9.5 to -3 (1000BASE-SX) Mean launched power
dBm
-11 to -3 (1000BASE-LX) -4 to 0 (1000BASE-LH1) -2 to +3 (1000BASE-ZX)
Table 71
Specification of DSAE Board
Item
Unit
Specification
Parameters of optical receive port at client side (S point) Receiving sensitivity
dBm
-17 (1000BASE-SX) -19 (1000BASE-LX)
ZTE Confidential Proprietary
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105
ZXWM M920 Product Description
Item
Unit
Specification -20 (1000BASE-LH1) -22 (1000BASE-ZX) -25 (100-SM-LL-L) -20 (100-SM-LL-I) -13 (100-M5-SL-I) 0 (1000BASE-SX) -3 (1000BASE-LX) -3 (1000BASE-LH1)
Overload power
dBm
-3 (1000BASE-ZX) -3 (100-SM-LL-L) -3 (100-SM-LL-I) -1.3 (100-M5-SL-I)
Parameters of optical transmit port at client side (R point) -9.5 to -3 (1000BASE-SX) -11 to -3 (1000BASE-LX) -4 to 0 (1000BASE-LH1) Mean optical launched power
dBm
-2 to +3 (1000BASE-ZX) -9 to -3 (100-SM-LL-L) -12 to -3 (100-SM-LL-I) -7.3 to +1.3 (100-M5-SL-I)
Table 72
Specification of SMU Board
Item
Unit
Specification
Parameters of optical receive port at line side (Rn point) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
Wavelength area of input signals
nm
-14 (PIN) -21 (APD) >27 0 (PIN) -9 (APD) 1250-1620
Parameters of optical transmit port at line side (Sn point)
Spectral characteristics
Central
106
Maximum (20 dB bandwidth
nm
0.3
Minimum side mode compression ratio (SMCR)
dB
35
Nominal central
THz
192.10~196.05!C-band"
2009 ZTE Corporation. All rights reserved.
ZTE Confidential Proprietary
ZXWM M920 Product Description
Item
Unit frequency
Specification 191.30~196.075!CE-band" 186.95~190.90!L-band"
frequency Central frequency offset
+ ±12.5 (spacing: 100 GHz)
GHz
+ ±5 (spacing: 50 GHz) + ±2.5G (spacing: 25 GHz)
Mean launched power
dBm
-5 to 0
Minimum extinction ratio
dB
10
Dispersion tolerance
ps/nm
800
Eye diagram
-
Compliant with ITU-T G.959.1
Table 73
Specification of FCA
Board
Item
Unit
Specification
Parameters of optical receive port at line side (Rn) Receiving sensitivity
dBm
Receiver reflection
dB
Overload power
dBm
Wavelength area of input signals
nm
-14 (PIN) -21 (APD) >27 0 (PIN) -9 (APD) 1280-1565
Parameters of optical transmit port at line side (Sn point)
Spectral characteristic
Central frequency
Maximum (20 dB bandwidth
nm
0.3
Minimum side mode compression ratio (SMCR)
dB
35
Nominal central frequency
THz
192.1-196.05
Central frequency offset
GHz
+ ±12.5 (spacing: 100 GHz) + ±5 (spacing: 50 GHz)
Mean launched power
dBm
-5 to 0
Minimum extinction ratio
dB
10
Dispersion tolerance
ps/nm
800
Eye diagram
-
Compliance with ITU-T G.957
Parameters of optical receive port at client side Receiving sensitivity
ZTE Confidential Proprietary
FC
dBm
-18
2GFC
dBm
-18
2009 ZTE Corporation. All rights reserved.
107
ZXWM M920 Product Description
Item
Overload power
Unit
Specification
4GFC
dBm
-18
FC
dBm
0
2GFC
dBm
0
4GFC
dBm
0
Parameters of optical transmit port at client side
Output power
5.10
FC
dBm
-4.5
2GFC
dBm
-4.5
4GFC
dBm
-4.5
OS Channel (SOSC) Performance Indices The SOSC interface performance indices of ZXWM M920 are listed in Table 74 .
Table 74
Main Performance Indices of SOSC
Item
Unit
Optical signal type Operating wavelength
5.11
Specification 100BASE-FX
nm
1510&10
Signal code
4B/5B
Supervision rate
100
Signal transmission power
dBm
-5 to 0
-1 to 6
,+4
Minimum receiving sensitivity
dBm
-34
-35
-43
Supervision interfaces indices In ZXWM M920 system, each DWDM TM, de-multiplexer and optical amplifier provide service supervision interface SC/PC to supervise active optical channel in real time without disconnecting services. Optical power difference between supervision interface and active optical channel can be found i n the following Table 75 .
Table 75
Functions and parameters of supervision interface at boards
Board
Division ratio at input supervision interface
Division ratio at output supervision interface
OMU
None
2.5%
ODU
2.5%
None
OCI
0.5%
2.5%
OBM
2.5%
0.5%
108
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ZXWM M920 Product Description
5.12
Board
Division ratio at input supervision interface
Division ratio at output supervision interface
OA
None
0.1% for 24dBm output OA, and 0.5% for others
Dispersion compensation parameters Dispersion compensation fiber is located before EOBA, EOPA and EOLA. When EOPA+EOBA mode is adopted, DCM is between them. Broadband dispersion compensation fiber is used to compensate optical channel dispersion, which is a negative v alue just like slope. Slope compensation rate is up to 90%~110%.
Table 76
Parameters of dispersion compensation equipment
Maximum insertion loss
Item
Maximum insertion loss & DGD G.652 fiber
Maximum insertion loss & DGD G.655 fiber
DGD(ps)
Unit
Parameter
20km
dB
2.5
<0.6
40km
dB
4
<0.8
60km
dB
6
<1.0
80km
dB
7
<1.1
100km
dB
8
<1.2
120km
dB
10
<1.2
20km
dB
2
<0.45
40km
dB
4
<0.60
60km
dB
5
<0.75
80km
dB
6
<0.80
100km
dB
7
<0.90
120km
dB
8
<1.0
5.13
Physical Performance
5.13.1
Structure Indices The dimensions and weight of ZXWM M920 are shown in Table 77 .
Table 77
Dimensions and Weight of ZXWM M920
Components Unified cabinets of ZTE transmission equipment
ZTE Confidential Proprietary
Dimensions
Weight (kg)
2,000 mm (H) % 600 mm (W) % 300 mm (D)
70
2,200 mm (H) % 600 mm (W) % 300 mm (D)
80
2,600 mm (H) % 600 mm (W) % 300 mm (D)
90
2009 ZTE Corporation. All rights reserved.
109
ZXWM M920 Product Description
Components
Dimensions
Weight (kg)
sub-rack
422 mm (H) % 533mm (W) % 284.8 mm (D)
25
ODF sub-rack
88 mm (H) % 482.6 mm (W) % 269.5 mm (D)
--
DCM chassis
47 mm (H) % 533 mm (W) % 286.5 mm (D)
--
Power distribution sub-rack
3.6 mm (H) % 533 mm (W) % 233.1mm (D)
--
Telephone bracket
132.5 mm (H) % 482.6 mm (W) % 269.5 mm (D)
--
PCB
320 mm (W) % 210 mm (D)
--
Note:
5.13.2
The cabinet weight weight refers to the empty empty cabinet.
Bearing Requirements Requirements of the Equipment Room The bearing capability of the equipment room should be over 450 kg/m2 in case of only considering ZXWM M920.
5.13.3
Power Supply Indices 1
Voltage requirements
Input voltage: -48 VDC Allowable fluctuation range: -57 V ~ -40 V 2
Power consumption requirements
The power consumption of each board and unit in ZXWM M920 is illustrated in Table 78 .
Table 78
Power Consumption Consumption of of Commonly Commonly Used Used Boards/Units Boards/Units of ZXWM M920
Abbreviati on
Max. Power Consumption (W) @ 25 C Environment Temperature
2.5G optical transfer unit
OTU
14
2.5G optical transfer unit with FEC
OTUF
14
10G optical transfer unit with FEC/AFEC
OTU10G
29.2
Enhanced 10G optical transfer unit with FEC/FEC
EOTU10G
28
Semi 10G optical transfer unit with FEC/FEC
SOTU10G
25
40G optical transfer unit with FEC/AFEC
TST3
90
Four 10G SubRate Mux Board
MQT3
120
STM-64 sub-rate convergence
SRM41
33
Unit Name
Board
110
reserved. 2009 ZTE Corporation. All rights reserved.
°
ZTE Confidential Proprietary
ZXWM M920 Product Description
Abbreviati on
Max. Power Consumption (W) @ 25 C Environment Temperature
Four 622 M/155 M SubRate Mux Board
SRM42
20
Dual-channel gigabit Ethernet convergence board
GEM2
13
Dual-channel gigabit Ethernet convergence board with FEC
GEMF
18
Eight Gigabit Ethernet Mux Board
GEM8
35
OM board TFF/AWG
OMU
3!TFF" TFF"/13.2 ! AWG" AWG"
OD board TFF/AWG
ODU
3!TFF" TFF"/13.2 ! AWG" AWG"
Optical multiplex/demultiplex multiplex/demultiplex interleaver
OCI
3
Variable insertion inserti on loss Multiplexer Multi plexer
VMUX
30
Optical broadband multiplexer
OBM
3
Compact Optical Add/ Drop Board of 1/2/4 Wave length
SOAD1
4
SOAD2
4
SOAD4
5
Wavelength Blocking Unit
WBU
15
Wavelength Wavelength Selective Unit
WSU
15
Wavelength Blocking Multiplexing
WBM
32
EOBAS
14.5
EOBAH24 24
30
EOBAH27 26
40
Enhanced Optical preamplifier preamplif ier
EOPA
11
Enhanced Optical line amplifier
EOLA
14.5
Enhanced Optical node amplifier
EONA
25
Distributed Raman amplifier
DRA
35
Optical protection board
SOP
5
Optical performance monitoring board
OPM
5
Optical supervision channel board
SOSC
12
Net control processor
SNP
10
Transmitter supervisory add/drop multiplexer board
SDMT
3
Unit Name
°
board
Enhanced Optical power amplifier
ZTE Confidential Proprietary
reserved. 2009 ZTE Corporation. All rights reserved.
111
ZXWM M920 Product Description
Abbreviati on
Max. Power Consumption (W) @ 25 C Environment Temperature
Receiver supervisory add/drop multiplexer board
SDMR
3
Line attenuation control board (generator)
LACG
3
Line attenuation control board (terminal)
LACT
3
Extension Interface Board
SEI
5
Power Board (A-type)
SPWA
28
Compact Fan Board
SFAN
10
Master Sub-rack/ Slave Sub-rack
---
751
Unit Name
Sub-rack
°
Note: The power power values of of the sub-rack is for full configuration of of 10G OTU (SOTU 10G). The power consumption in the table is the m aximum value at normal temperature.
5.14
Environment Conditions
5.14.1
Grounding Requirements 1
Internal grounding requirements of the system
•
The board board shielding shielding plate is grounded grounded via the panel panel to the case, and and there is no electronic connection inside a board.
•
The cabinet and sub-rack case are connected to the protective ground.
2
The equipment room grounding requirements
•
Grounding resistance of the AC working ground: ≤ 4 Ω
•
Grounding resistance of the safety protection ground: ≤ 4 Ω
•
Grounding resistance of the lightning protection ground: ≤ 4 Ω
•
Combined grounding, with resistance ≤ 1 Ω
•
If the equipment room provides the working working ground and the protection protection ground, ground, the working and protection grounds of the equipment shall be connected to the relevant grounding copper bar. If the equipment room only provides a copper ground bar, it is
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allowed to jointly earth the working and protection grounds. The resistance values shall meet the above requirements.
5.14.2
Temperature and Humidity Requirements The requirements on ambient temperature and relative humidity of ZXWM M920 are shown in Table 79 .
Table 79
Temperature and Humidity Requirements
Item
Indices
Ambient temperature
Relative humidity (35 °C)
Performance indices guaranteed
0 °C + 45 °C
Operation guaranteed
-5 °C ~ +55 °C
Performance indices granted
10% ~ 90%
Operation guaranteed
5% ~ 95%
In normal working environment, the measuring spot of humidity and temperature is the data measured at the spot 1.5 m above the floor and 0.4 m in front of the equipment.
5.14.3
Requirements Requirements for Cleanness Cleanness involves dust and harmful gases in the air. The equipment should be operated in the equipment room that m eets the cleanness requirements described below: 1
In the transmission equipment room, there is no explosive, electrically conductive, magnetically conductive or corrosive dust.
2
The concentration of dust particles with the diameter greater than 5-m should be less than or equal to 3 × 104 particles/m3.
3
There is no corrosive corrosive metal metal or gases gases that are are detrimental detrimental to the insulation in the equipment room. For details, please refer to Table 80 .
Table 80
4
Requirements for Harmful Harmful Gases in the Equipment Room 3
3
Harmful Gas
Mean Value (mg/m )
Max. Value (mg/m )
SO2
0.2
1.5
H2S
0.006
0.03
NO2
0.04
0.15
NH3
0.05
0.15
CL2
0.01
0.3
The equipment room should be always kept clean, with doors and windows windows being closed.
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5.14.4
Dustproof and Corrosion-Proof Requirements According to the application range recommended in GB798, the dustproof and antisepsis requirements of ZXWM M920 are as f ollows:
5.14.5
1
Storage environment conditions: For 1K5/1Z1/1B2/1C2/1S3/1M3, the storage duration is 180 days.
2
Transportation environment conditions: For 2K4P/2B2/2C2/2S3/2M3, the transportation duration is 30 days.
3
Application environment conditions: For 3K5/3Z2/3Z7/3B2/3C2/3S2/3M3, the continuous operation time is 20 years.
Environment for Storage 1
Climate
Table 81
Climate requirement
Item
Range
Altitude
< 4000m
Air pressure
70 ~ 106kPa
Temperature
-404~ +704
Temperature change rate
< 14/min
Relative humidity
5% ~ 100%
Solar radiation
1120W/s.
Air speed
< 20m/s.
2
Mechanical stress
Table 82
Requirements for mechanical stress
Item
unit
value
Acceleration
m/S2
0.1
Frequency range
Hz
58100, 10085
direction
X,Y,Z
duration
Min
90
The earthquake-proof performance detection reaches the ei ght-level intensity
5.14.6
Environment for Transportation 1
114
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Table 83
5.14.7
Climate requirement
Item
Range
Altitude
< 4000m
Air pressure
70 ~ 106kPa
Temperature
-404~ +704
Temperature change rate
< 1 4/min
Relative humidity
5% ~ 100%
Solar radiation
< 1120W/s.
Air speed
< 20m/s.
Electronic Static Discharge (ESD) 1
Anti-interference for static discharging
The static discharge anti-interference index of ZXWM M920 equipment is shown in Table 84 . During the operation in the interface area, be sure to wear an antistatic wrist strap.
Table 84
2
Static discharge anti-interference
Contact discharge
Air discharge
Criterion for test results
6kV
8kV
Performance B
8kV
15kV
Performance R
RF electromagnetic radiated susceptibility
The RF electromagnetic radiated susceptibility of ZXWM M920 equipment is shown in Table 85 .
Table 85
RF electromagnetic radiated susceptibility
Test frequency (80MHz~1000MHz)
3
Electric field intensity
Amplitude modulation
Criterion for test results
10V/m
80%AM (1kHz)
Performance A
Electrical fast transient burst susceptibility
The electrical fast transient burst susceptibility of ZXWM M920 equipment is shown in Table 86 and Table 87 .
Table 86
Electrical fast transient burst susceptibility at the DC power port
Generator waveform 5/50ns Test voltage 1kV
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Repeated frequency
Criterion for test results
5kHz
Performance B
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Table 87
Electrical fast transient burst susceptibilities at the signal cable and control cable ports
Generator waveform 5/50ns Test voltage 1kV 4
Repeated frequency
Criterion for test results
5kHz
Performance B
Surge susceptibility
The surge susceptibility of ZXWM M920 equipment is shown in Table 88 and Table 89 .
Table 88
Surge susceptibility of DC power
The waveform of generators 1.2/50us (8/20 s), internal resistance 12 Test mode
Test voltage
Criterion for test results
Line to ground
1kV
Performance B
Line to ground
2kV
Performance R
Table 89
Surge susceptibility of the outdoor signal cable
The waveform of generators 10/700!s, internal resistance 40 Test mode
Test voltage
Line to line Line to ground Line to line Line to ground
Table 90
Criterion for test results
2kV
Performance B
4kV
Performance R
Surge susceptibility of the indoor signal cable
Generator waveform 1.2/50 s (8/20s), internal resistance 42 Test mode
Test voltage
Criterion for test results
Line to ground
1kV
Performance B
Line to ground
2kV
Performance R
5
Conductivity susceptibility of RF field
The conductivity susceptibility of RF fi eld of ZXWM M920 equipment is shown in Table 91 .
Table 91
Conductivity susceptibility of RF field
Test frequency 0.15MHz ~ 80MHz Test intensity
Amplitude modulation
Criterion for test results
3V
80%AM (1kHz)
Performance A
Electromagnetic Interference (EMI)
6
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Conductive emission electromagnetic interference
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The conductive emission electromagnetic interference of ZXWM M920 equipment is shown in Table 92 .
Table 92
Conductive emission electromagnetic interference at the direct current port
Limits (dBuV)
Testing frequency (MHz)
7
Quasi-peak
Mean value
0.02~0.15
79
--
0.15~0.5
79
66
0.5~30
73
60
Radioactive emission electromagnetic interference
The radioactive emission electromagnetic interference of the ZXWM M920 equipment is shown in Table 93 .
Table 93
Radio active emission electromagnetic interference
Testing frequency (MHz)
5.14.8
Quasi-peak demodulating limit (dB !V/m) 10m
3m
30~230
40
50
230~1000
47
57
Safety requirements This product adopts the technical requirements specified in the following standard: IEC/EN 60950:2000 Safety of information technology equipment 1
Working voltage and current
Rated working voltage: -48V Max. working voltage: -57V Min. working voltage: -40V Rated working current: 16A 2
Insulation classification of the equipment
The power supply of the equipment provides the SELV circuit with safe and excessively low voltage, without self-generating dangerous voltage. It belongs to the equipment of the class III insulation (Class III equipment). 3
Optical interface
The optical module of the maximum power belongs to (Class 3A). All the optical modules shall be under strict control and c ertified by authorities (such as UL, TUV and NEMKO), and comply with EN60825.
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4
Fuse
All the fuses and power modules, including recoverable fuses, shall be certified by authorities such as CE, UL and TUV. 5
Safety mark
On the package of the equipment, there are striking labels about antistatic, fragile, waterproof, and damp-proof. The maximum optical power satisfies the 3A safety standard. An obvious label warning against the laser shall be pasted at the optical interface. Cables of different colors shall be used f or the power input, shielding GND and lightening protection GND to avoid incorrect connection. Different power connectors shall use coding keys. There shall be a power label at the power inlet. Both the equipment and each board shall have an antistatic label. Grounding symbol 6
.$
$ indicates switch-on, and $
$ indicates switch-off.
Mechanical structure
In installation, four bolts are designed at t he rack bottom (may also be used to adjust balance) to fix the rack to the ground. At the rack top, the corresponding screws are designed to fix the rack to the cabling rack. When installed in the equipment room, the rack shall be fixed both at the top and bottom to ensure the stability and safety of the equipment. The corners of both the rack and sub-rack are processed to avoid hurting people. 7
Fire protection
The materials of the circuit boards in the equipment use the fireproof materials of the V-2 level to prevent the circuits from burning in case of failure. The structural parts use unburnable materials with a good fir eproof performance, including surface processing materials. With the effective heat dissipation design, it ensures that the temperature does not exceed 70/C to prevent heat aggregation and reduce the possibility of burning. Safe parts passing the safety authentication (CE, UL, etc.) are used. 8
High temperature protection
In abnormal conditions, the temperature does not exceed 70/C. The plastic parts, components, wires and cables, and safety labels shall all comply with the requirements specified in the safety standard-GB4943/EN60950. 9
Lightening protection
In this system, good grounding and isolation and protection of electrical interfaces are used to prevent the dangerous voltage of lightening.
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5.15
Introduction to Interfaces This chapter briefly introduces types and functions of the interfaces used in ZXWM M920.
5.15.1
Interface on SEIA board SEIA has two subclasses: SEIA1 and SEIA2, the former used in main sub-rack, the l atter used in slave sub-rack Figure 39 Common Interface Area of the OTU Sub-rack
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1
FE Ethernet interface
2
Testing switch
3
Subrack cascaded data interface
4
Bell control
5
External alarm input interface
6
Subrack indicators
7
Interface of cascaded alarm
8
Interface of alarm output, ring output and rack indicators signal
The definitions and descriptions of the interface area on SEI board are li sted in Table 94 and Table 95 .
Table 94
Definitions and Description for the Common Interface on SEIA1 Board
Item Board ID
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SEIA1 SEIA1
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Board Item
SEIA1
J4
RJ45 socket is used as Qx interface to access EMS computer, and also as the transparent user channel interface or IP phone interface based on Ethernet.
Subrack cascaded data interface
J1, J3
D-type 36pin straight PCB jointing socket (female) to connect to subrack cascaded data interface of other subarcks.
External alarm input interface
J2
Inputs external alarms.
Interface of cascaded alarm
J5
Inputs alarms from other subrack
Interface of alarm output, ring output and rack indicators signal
J6
Outputs alarm signal, ring driving signal and rack indicator signal
Testing switch
TST
Reserved
FE Ethernet interface
Bell control
Control the ON state or OFF state of the ring.
Subrack indicators
Indicates the state of the subrack, green light for normal state, red light for critical al arm, orange for major alarm, yellow for minor alarm
Number of occupied slot
1
Slot for SEIA1 board
Slot 29
Table 95
Definitions and Description for the Common Interface on SEIA2 Board
Item
SEIA2
Board ID
SEIA2
FE Ethernet interface
J3
RJ45 socket is used as Qx interface to access EMS computer, and also as the transparent user channel interface or IP phone interface based on Ethernet.
J1, J2
D-type 36pin straight PCB jointing socket (female) to connect to subrack cascaded data interface of other subarcks.
Subrack cascaded data interface
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ZXWM M920 Product Description
Board Item
Testing switch
5.15.2
TST
SEIA2
Reserved
Number of occupied slot
1
Slot for SEIA2 board
Slot 29
Interface on SPWA board Figure 40 Interfaces on the SPWA board
1
Terminal block
2
Subrack cascaded GE interface
3
Subrack cascaded GE optical interface connection indicator
4
Power switch
5
RS232 console interface
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6
RJ-45 console interface
7
Indicators
8
Laser warning sign
9
Laser level sign
The definitions and descriptions of the interface area on SPWA board are listed i n Table 96 .
Table 96
Definitions and Description for the Common Interface on SPWA Board
Item
SPWA
Board ID
SPWA
Power switch
If the switch is in the status of #ON", the external power supply is connected to the SPWA. On the other hand, if the switch i s in the status of "OFF$, the connection between SPWA and the external power is cut off.
Indicator
Subrack cascaded GE interface
NOM
Running indicator, green
ALM
Alarm indicator, red
M/S
Master/slave indicator, green
0, 1, 2, 3-1, 3-2, 3-3, 3-4, 4, 5-1, 5-2, 5-3, 5-4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20-1, 20-2, 21, 22-1, 22-2, 23, 24-1, 24-2, 25, 26-1, 26-2
Board internal communication indicator, green.
J1, J2
Connects to subrack cascaded GE interface of other subracks, LC/PC connector
Laser warning sign
Do not look at optical interfaces directly while plugging/unplugging fiber pigtails to avoid burning eyes.
Laser class sign
Indicates that the laser class of SPWA board is CLASS 1
Number of occupied slot
1
Slot for SPWA board
Slot 27, slot 28
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WM M920 Product Description
6
Appendix A Abbreviation Abbreviation
Full English Description
AFEC
Advance Forward Error Correction
AFR
Absolute Frequency Reference
AIS
Alarm Indication Signal
APR
Automatic Power Reduction
APS
Automatic Protection Switching
APSD
Automatic Power Shutdown
APSF
Automatic Protection Switching for FastEthernet
ASE
Amplified Spontaneous Emission
AWG
Array Waveguide Grating
BER
Bit Error Ratio
BLSR
Bidirectional Line Switching Ring
BSHR
Bidirectional Self-Healing Ring
CDR
Clock and Data Recovery
CMI
Code Mark Inversion
CODEC
Code and Decode
CPU
Center Process Unit
CRC
Cyclic Redundancy Check
DBMS
Database Management System
DCC
Data Communications Channel
DCF
Dispersion Compensation Fiber
DCG
Dispersion Compensation Grating
DCN
Data Communications Network
DCM
Dispersion Compensation Module
DDI
Double DAFECt Indication
DFB-LD
Distributed Feedback Laser Diode
DSF
Dispersion Shifted Fiber
DGD
Differential Group Delay
DTMF
Dual Tone Multi Frequency
DWDM
Dense Wavelength Division Multiplexing
DXC
Digital Cross-connect
EAM
Electrical Absorption Modulation
ECC
Embedded Control Channel
EDFA
Erbium Doped Fiber Amplifier
EX
Extinction Ratio
FDI
Forward DAFECtion Indication
FEC
Forward Error Correction
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Abbreviation
Full English Description
FPDC
Fiber Passive Dispersion Compensator
FWM
Four Wave Mixing
GbE
Gigabits Ethernet
GUI
Graphical User Interfaces
IP
Internet Protocol
LD
Laser Diode
LOF
Loss of Frame
LOS
Loss of Signal
MDI
Multiple Document Interface
MCU
Management and Control Unit
MOADM
Metro Optical Add Drop Multiplexer Equipment
MBOTU
Sub-rack backplane for OUT
MQW
Multiple Quantum Well
MSP
Multiplex Section Protection
MST
Multiplex Section Termination
SNP
Net Control Processor for Fast Ethernet
NE
Network Element
NNI
Network Node Interface
NMCC
Network Manage Control Center
NRZ
Non Return to Zero
NT
Network Termination
NZDSF
Non-Zero Dispersion Shifted Fiber
OA
Optical Amplifier
OADM
Optical Add/Drop Multiplexer
EOBA
Enhanced Optical Booster Amplifier
Och
Optical Channel
ODF
Optical fiber Distribution Frame
ODU
Optical Demultiplexer Unit
OGMD
Optical Group Mux/DeMux Board
OHP
Order wire
EOLA
Optical Line Amplifier
OLT
Optical Line Termination
OMU
Optical Multiplexer Unit
ONU
Optical Network Unit
OP
Optical Protection Unit
EOPA
Enhanced Optical Preamplifier Amplifier
OPM
Optical Performance Monitor
OPMSN
Optical Protect for Mux Section (without preventing resonance switch)
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WM M920 Product Description
Abbreviation
Full English Description
OPMSS
Optical Protect for Mux Section (with preventing resonance switch)
SOSC
Optical Supervisory Channel
OSNR
Optical Signal-Noise Ratio
OTM
Optical Terminal
OTN
Optical Transport Network
OTU
Optical Transponder Unit
OXC
Optical Cross-connect
PDC
Passive Dispersion Compensator
PMD
Polarization Mode Dispersion
ROADM
Reconfigurable Optical Add/Drop Multiplexer
SDH
Synchronous Digital Hierarchy
SDM
Supervision add/drop multiplexing board
SEF
Severely Errored Frame
SES
Severely Errored Block Second
SFP
Small Form Factor Pluggable
SLIC
Subscriber Line Interface Circuit
SMCC
Sub-network Management Control Center
SMT
Surface Mount
SNMP
Simple Network Management Protocol
STM
Synchronous Transfer Mode
TCP
Transmission Control Protocol
TFF
Thin Film Filter
TMN
Telecommunications Management Network
WDM
Wavelength Division Multiplexing
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7
Appendix B Followed Standards and Recommendations The ZXWM M920 is designed with reference to the f ollowing recommendations and standards: ITU-T G.652
Characteristics of a single-mode optical fiber and optical cable
ITU-T G.653
Characteristics of Dispersion-Shifted Single-Mode Fiber
ITU-T G.655 Fibers
Characteristics of Non-Zero Dispersion-Shifted Single-Mode
ITU-T G.661 Definition and test methods for the relevant generic parameters of optical amplifier devices and subsystems ITU-T G.662 subsystems
Generic characteristics of optical fiber amplifier devices and
ITU-T G.663 subsystems
Application related aspects of optical amplifier devices and
ITU-T G.664 transport systems
Optical safety procedures and requirements for optical
ITU-T G.671
Transmission characteristics of passive optical components
ITU-T G.681 Functional characteristics of interoffice and long-haul line systems using optical amplifiers, including optical multiplexing ITU-T G.691 Optical interfaces for single channel STM-64, STM-256 systems and other SDH systems with optical amplifiers ITU-T G.692 amplifiers ITUT-T G.694.1 ITU-T G.709-2003
Optical interface for multichannel systems with optical
Spectral grids for WDM application: DWDM frequency grid Optical Transport Network (OTN) Interfaces
ITU-T G.828 Optical input jitter and wander control based on the synchronous digital hierarchy (SDH) ITU-T G.826 Error performance parameters and indexes for international, constant bit rate digital paths at or above the prim ary group ITU-T G.841 architectures
Types and characteristics of SDH network protection
ITU-T G.957
Optical interfaces for SDH equipment and systems
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