波分复用（WDM）光纤传输系统工程设计规范 GBT 51152-2015 （英文版）

Foreword

ThiscodewascompletedbyChinaMobileGroupDesignInstitute,Co.,Ltd.andinconjunctionwithotherorganizationsinaccordancewiththerequirementsofDocumentJIANBIAO〔2011〕NO.17issuedbytheMinistryofHousingandUrbanandRuralDevelopment-NoticeonPrintingtheeDevelopmentandRevisionPlanofNationalEngineeringConstructionStandardsin2011.

Inthepreparationprocessofthiscode,thedraftingteamconductedin-depthresearchandinvestigation,carefullyreviewedtheapplicationanddevelopmentofWDMtechnologies,solicitedopinionsfromrelevantorganizationsandexpertsnationwide,andconsultednumerousrelevantdomesticandinternationalstandardsandregulationsbeforefinalizingthedraft.

Thecodecomprises9chapterswiththemaintechnicalcontentsincludingthefollowing:generalprovisions;termsandAbbreviations;systemconfigurationandCategorization;transmissionsystemdesign;auxiliarysystems;networkprotection;transmissionsystemperformance;selectionandconfigurationofequipmentandequipmentinstallation.

TheMinistryofHousingandUrban-RuralDevelopmentisinchargeoftheadministrationofthiscode;theMinistryofIndustryandInformationTechnologyisresponsibleforitsroutinemanagement;andChinaMobileGroupDesignInstituteCo.,Ltd.isresponsiblefortheclarificationofspecifictechnicalcontents.Duringtheprocessofimplementingthiscode,userssuggestionsandfeedback,whenevernecessary,shouldbesubmittedtoChinaMobileGroupDesignInstituteCo.,Ltd.(Address:16A,DanlingStreet,HaidianDistrict,Beijing,China,Postcode;100080)andsuchsuggestionsandfeedbackwillbeusedasreferenceforfuturerevision.

Chiefdevelopmentorganization,participatingdevelopmentorganizations,chiefdraftingstaffandchiefreviewersofthiscode,translatorsandtranslationproofreadersarelistedasbelow:

ChiefDevelopmentOrganization:

ChinaMobileGroupDesignInstituteCo.,Ltd.

ParticipatingDevelopmentOrganizations:

GuangdongPlanningandDesigningInstituteofTelecommunicationsCo.,Ltd.

ShanghaiPostsandTelecommunicationsDesigningConsultingInstituteCo.,Ltd.

ChiefDraftersStaff:

LiuJiangpingGaoJunshiXiJianhuaLiYongWangYingchun

WangYunJiangShuzhenChenRuquanZhangYun

ChiefReviewers:

WangJunhuaLiuQiZhangGuoxinZouHongqiangYangTierong

ShenLiangYuanHaitaoHuangWeiminPanYaoxiWeiXianhu

Translators:

LiuJiangpingGaoJunshiXiJianhuaLiYongWangYingchun

WangJiameng

TranslationProofreaders:

WangJunhuaWangQi

·1·

Contents

1GeneralProvisions (1)

2TermsandAbbreviations (2)

2.1Terms (2)

2.2Abbreviations (3)

3SystemConfigurationandCategorization (5)

3.1CharacteristicsofWDMSystem (5)

3.2SystemConfiguration (5)

3.3AplicationCodes (6)

3.4CentralWavelengthAllocation (8)

3.5ainPatTnterface (11)

3.6OTUInterface (12)

3.7OpicalSupervisoyChane! (14)

4TransmissionSystemDesign (15)

4.1Station (15)

4.2FiberandDesignofMultipleSecion (15)

4.3DispersionCompensationandOtherTechnologies (16)

4.4ChannelAssignment (16)

5AuxiliarySystems (17)

5.1NetworkManagementSysem (17)

5.2EngineringOrderWire (18)

6NetworkProtection (19)

6.1NetworkTopology (19)

6.2Prptection (19)

7TransmissionSystemPerformance (20)

7.1OpticalSignal-to-noiseRatio (20)

7.2BitError (21)

7.3Jitter (23)

8SelectionandConfigurationofEquipment (24)

8.1SelectionofEquipment (24)

8.2ConfigurationofEquipment (24)

9EquipmentInstallation (26)

9.1In-stationCommunicationSystem (26)

9.2StationLayoutandEquipmentArrangement (26)

9.3EquipmentandCableRackInstallation (27)

9.4CableandWiring (27)

9.5PowerSupplySystemandGrounding (28)

·2·

9.6EquipmentRoomEnvironmentalConditions (29)

ExplanationofWordinginThisCode (30)

ListofQuotedStandards (31)

·1·

1GeneralProvisions

1.0.1Thiscodeisformulatedwithaviewtounifyandstandardizetheengineeringdesignofwavelengthdivisionmultiplexing(WDM)opticalfibertransmissionsystemsinordertoachieveadvancedtechnology,safetyandreliability,economyandrationality,energysavingandenvironmentalprotection.

1.0.2Thiscodeisapplicabletotheengineeringdesignofsingle-fiberunidirectionalC-bandopenDWDMsystemsandsingle-fiberunidirectionalopenCWDMsystems.

1.0.3Engineeringdesignshallbecarriedoutbasedonoverallplanning,jointconstruction,andresourcesharingtomeettherequirementofbuildinga_resource-conservationandenvironmental-friendlysociety.

1.0.4Onthebasisofensuringcommunicationquality,multipleengineeringdesignschemesshallberaisedandcomparedsoastoenhanceeconomiceficiencyandreduceprojectcost.

1.0.5WDMopticalfibertransmissionsystemengineeringdesignshallcomplywithnotonlytherequirementsstipulatedinthiscode,butalsothoseinthecurrentrelevantonesofthenation.

·2·

2TermsandAbbreviations

2.1Terms

2.1.1C-bandconventionalband

C-bandreferstothewavelengthbandof1530nm-1565nm.

2.1.2L-bandlongwavelengthband

L-bandreferstothewavelengthbandof1565nm-1625nm.

2.1.3Opticalchannel

Intheopticalmultiplexsection,anopticalchannelisapassagethroughwhichopticalsignalsareunidirectionallytransmitted.

2.1.4Nominalcentralfrequency(wavelength)

Anominalcentralfrequency(wavelength)isdefinedasafrequency(wavelength)allocatedatacertainfrequencyintervalintheWDMsystem,with193.10THz(1552.52nmvacuumwavelength)asthereferencefrequency(wavelength).

2.1.5Opticalpath

Anopticalpathisanall-inclusivefacihityfortransmittingspecificservicesignalsbetweenthesourcepointanddestinationpointWDMequipmentclientinterfaces.

2.1.6Opticalboosteramplifier

AnopticalboosteramplifierisanopticalamplifierusedbehindthemultiplexerofthetransmitteroftheWDMsystemtoboostthesystem'stransmittingopticalpower.

2.1.7Opticalpre-amplifier

Anopticalpre-amplifierisanopticalamplifierusedinfrontofthedemultiplexerofthereceiveroftheWDMsystemtoimprovesignalreceptionsensitivity.

2.1.8Opticallineamplifier

Anopticallineamplifierisanopticalamplifierusedbetweenpassiveopticalfibersegmentstocompensateforfiberlossandextendthelengthofpassiverelaytransmission.

2.1.9Opticalamplifierspan

Anopticalamplifierspanisatransmissionentitybetweenadjacentopticallineamplifierstations(OLAstations),orbetweenanopticalterminalmultiplexerstation(OTMstation)andtheadjacentOLAstation,orbetweenanopticaladd-dropmultiplexerstation(OADMstation)andtheadjacentOLAstation,constitutingatransmissionspanusedtoextendthedistanceofpassiverelay.

2.1.10Opticalmultiplexsection

AnopticalmultiplexsectionisatransmissionsegmentwithelectricalregenerativerelayfunctionsbetweenadjacentOTMstationsorOADMstations,orbetweenanOTMstationandtheadjacentOADMstation.

2.1.11Ramanamplifier

ARamanamplifierisanopticalamplifierusedtoamplifysignalsbasedonthestimulatedRamanscattering(SRS)effectofthetransmissionfibersoftheWDMsystem.

2.1.12(Optical)coherentdetection

·3·

(Optical)coherentdetectionreferstodetectingandreceivingcarriersignals'phaseinformationbymeansofcoherentlymixingthelocalopticalcarriersignalandtheopticalcarriersignalsofthesamefrequencyinthereceivingdevice.

2.1.13Ultra-long-haulDWDMsystem

Anultra-long-haulDWDMsystemisamulti-span40/80×10GDWDMsystemwithatargetdistanceofmorethan1000km,orasingle-span40/80×10GDWDMsystemwithatargetdistanceofmorethan160km.

2.1.14Receiveropticalsignalnoiseratiotolerance

InaWDMsystem,receiveropticalsignalnoiseratiotolerancereferstotheminimumtolerableOSNRvalueatthepointSn(orR)whereanopticaltransponderunit(OTU)isdirectlyconnectedtothereferencereceiverwhenthemaximumapplicablebiterrorratio(e.g:1×10-¹²)isreachedafterreferencereceiver'serrorcorrection.

2.2Abbreviations

Symbol

Englishname

Chinesenameorinterpretation

ALS

AutomaticLaserShutdown

自动激光关断

APR

AutomaticPowerReduction

自动光功率减少

ASON

AutomaticallySwitchedOpticalNetwork

自动交换光网络

BBER

BackgroundBlockErrorRatio

背景误块比

BOL

BeginofLife

寿命初始

BTB

Back-to-back

背靠背

CMI

CodedMarkInversion

传号反转码

CORBA

CommonObjectRequestBrokerArchitecture

公共对象请求代理体系

CWDM

CoarseWavelengthDivisionMultiplexing

粗波分复用

DCM

DispersionCompensationModule

色散补偿模块

DCN

DataCommunicationNetwork

数据通信网

DGD

DifferentialGroupDelay

差分群时延

DWDM

DenseWavelengthDivisionMultiplexing

密集波分复用

DP-QPSK

DualPolarizationQuadraturePhaseShiftKeying

双极化正交相移键控

RZ-DQPSK

ReturntoZero-differential

QuadraturePhaseShiftKeying

归零差分正交相移键控

EMS

ElementManagementSystem

网元管理系统

EOL

EndofLife

寿命终了

FEC

ForwardErrorCorrection

前向纠错

HRP

HypotheticalReferencePath

假设参考通道

LAN

LocalAreaNetwork

局域网

LCT

LocalCraftTerminal

本地维护终端

MPI

MainPathInterface

主光通道接口

NMS

Network-levelManagementSystem

网络(级)管理系统

NRZ

Non-returntoZero

非归零(码)

OA

OpticalAmplifier

光放大器

·4·

OADM

OpticalAdd-dropMultiplexer

光分插复用器

OCHP

OpticalChannelProtection

光通路保护

ODB

OpticalDuobinary

光双二进制码

ODF

OpticalDistributionFrame

光纤配线架

OD(U)

OpticalDe-multiplexer(Unit)

光分波(解复用)器(单元)

ODUk

OpticalChannelDataUnit-k

光通路数据单元k

OLA

OpticalLineAmplifier

光线路放大器

OLP

OpticalLineProtection

光线路保护

OM(U)

OpticalMultiplexerUnit

光合波(复用)器(单元)

OMSP

OpticalMultiplexSectionProtection

光复用段保护

OSC

OpticalSupervisoryChannel

光监控通路

OSNR

OpticalSignal-to-noiseRatio

光信噪比

OTM

OpticalTerminalMultiplexer

光终端复用器

OTN

OpticalTransportNetwork

光传送网

OTU

OpticalTransponderUnit

光转换单元(波长转换器)

OTUk

OpticalChannelTransportUnit-k

光通路传送单元k

P-DPSK

PartialDifferentialPhaseShiftKeying

部分差分相移键控

PMD

PolarizationModeDispersion

偏振模色散

PSBT

Phase-shapedBinaryTransmission

相位整形二进制传输

(R)OADM

(Reconfigurable)OpticalAdd/DropMultiplexer

(可重构)光分插复用器

RZ

ReturntoZero

归零(码)

RZ-AMI

Return-to-zeroAlternateMarkInversion

归零型信号交替翻转

SDH

SynchronousDigitalHierarchy

同步数字体系

SESR

SeverelyErroredSecondRatio

严重误块秒比

SNMS

Sub-networkManagementSystem

子网管理系统

STM

SynchronousTransportModule

同步传送模块

WAN

WideAreaNetwork

广域网

WDM

WavelengthDivisionMultiplexing

波分复用

·5·

3SystemConfigurationandCategorization

3.1CharacteristicsofWDMSystem

3.1.1WDMsystemsarecategorizedintodenseWDM(DWDM)systemsandcoarseWDM(CWDM)systems.

ForaDWDMsystem,thechannelspacingshouldbe0.4nmor0.8nmandthenumbeofopticalchannelsinthebandof1530nm-1565nmmaybe40or80.ForaCWDMsystem,thechannelspacingshouldbe20nmandthenumberofopticalchannelsinthebandof1270nm-1610nmmaybe4,8or16.

3.1.2ThetypesofclientinterfacesforaWDMsystemshallbeinaccordancewiththosespecifiedinTable3.1.2.

Table3.1.2TypesofclientinterfacesforaWDMsystem

Typesofclientinterfaces

Signaltype

SDHinterface

STM-N(N=1,4,16,64or256)

Ethernetinterface

GE,10GELAN,10GEWAN,40GE,100GE,etc

OTNinterface

OTU1,OTU2,OTU3,OTU4,etc

3.1.3ChanneltypesandchannelratesofaWDMsystemshallbeinaccordancewiththosespecifiedin

Table3.1.3.

Table3.1.3ChanneltypesofaWDMsystem

Channeltype

Channelrate(Gbit/s)

Signalstructure

1.25G

0.622-1.25

STM-4orGE

2.5G

2.49-2.67

STM-16orOTU1

10G

9.953-12.5

STM-64orOTU2

40G

39.813-43.018

STM-256orOTU3

100G

100.0-130.0

OTU4

3.2SystemConfiguration

3.2.1AWDMsystem(Figure3.2.1)shallconsistofOpticalTerminalMultiplexer,OpticalLineAmplifierandOpticalAdd-DropMultiplexer,andshallmeetthefollowingrequirements:

1AnOTMshallconsistofamultiplexer,ademultiplexer,anopticalamplifier(OA)andanopticaltransponderunit(OTU).

2AnOLAshallconsistofanOA.

3AnOADMshallconsistofOMU,ODU,OAandOTU.

DTU-

PA

Figure3.2.1WDMsystemconfiguration

Tx/Rx-Clientequipment;BA-Opticalboosteramplifier;PA-Opticalpre-amplifier;LA-Opticallineamplifier

·6·

3.3ApplicationCodes

3.3.1TheapplicationcodesofMulti-spanDWDMsystemshallbedenotedbythecharactersequences"Mn.Bc-xW(-D)-z(S)",andtheapplicationcodesofsingle-spanDWDMsystemshallbedenotedbythecharactersequences"Sn.Bc-W(-D)-z(S)",themeaningandvalueofeachcharactershallbeinaccordancewiththosespecifiedinTable3.3.1.

Table3.3.1ThemeaningandvalueofeachcharacterintheapplicationcodesofDWDMsystem

Character

Meaning

Valueanddefinitions

M

Multi-spanDWDMsystem

一

S

Single-spanDWDMsystem

n

ThemaximumnumberofchannelssupportedbyaDWDMsystem

B

TheDWDMsystem'schanneltype

InaccordancewiththosespecifiedinTable3.1.3

c

Thechannelspacing(GHz)oftheDWDMsystem

一

X

ThemaximumnumberofspanssupportedbytheDWDMsystem

一

W

Loss(dB)inthespanssupportedbytheDWDMsystem

A:Foramulti-spanDWDMsystem,itrepresentsaspanlossof22dB;forasingle-spanDWDMsystem,itrepresentsaspanlossof44dB;

B:Foramulti-spanDWDMsystem,itrepresentsaspanlossof27dB;forasingle-spanDWDMsystem,itrepresentsaspanlossof55dB;

C:Foramulti-spanDWDMsystem,itrepresentsaspanlossof33dB

Z

ThetypeofopticalfiberthattheDWDMsystemsupports

652:thetypeoffiberisG.652

655:thetypeoffiberisG.655

S

TheDWDMsystem'sspectralband

C:ThespectralbandisC-band(1530nm-1565nm),andletter"C"canbeomitted;

L:ThespectralbandisL-band(1565nm-1625nm)

D

With/withoutdispersioncompensationinWDMsystem

1:Withdispersioncompensation

0:Withoutdispersioncompensation

Note:"D"isonlyforthe"100G"DWDMsystem.

3.3.2TheapplicationcodesofaDWDMsystemshallbeinaccordancewiththosespecifiedinTable3.3.2.

Table3.3.2ApplicationcodesofDWDMsystems

Systemcapacity

Applicationcode

Channelspacing

(GHz)

Spanloss

(dB)

Targetdistance

(km)

Fibertype

40×2.5G

M40.2.5G100-8A-652

100

8×22

640

G.652

M40.2.5G100-6A-652

100

6×22

480

G.652

M40.2.5G100-3B-652

100

3×27

300

G.652

M40.2.5G100-3C-652

100

3×33

360

G.652

M40.2.5G100-8A-655

100

8×22

640

G.655

M40.2.5G100-6A-655

100

6×22

480

G.655

M40.2.5G100-3B-655

100

3×27

300

G.655

M40.2.5G100-3C-655

100

3×33

360

G.655

40×10G

M40.10G100-8A-652

100

8×22

640

G.652

M40.10G100-6A-652

100

6×22

480

G.652

M40.10G100-3B-652

100

3×27

300

G.652

M40.10G100-3C-652

100

3×33

360

G.652

·7·

Table3.3.2(continued)

Systemcapacity

Applicationcode

Channelspacing

(GHz)

Spanloss

(dB)

Targetdistance

(km)

Fibertype

40×10G

M40.10G100-8A-655

100

8×22

640

G.655

M40.10G100-6A-655

100

6×22

480

G.655

M40.10G100-3B-655

100

3×27

300

G.655

M40.10G100-3C-655

100

3×33

360

G.655

80×10G

M80.10G50-8A-652

50

8×22

640

G.652

M80.10G50-3B-652

50

3×27

300

G.652

M80.10G50-6B-652

50

6×27

600

G.652

M80.10G50-9B-652

50

9×27

900

G.652

M80.10G50-8A-655

50

8×22

640

G.655

M80.10G50-3B-655

50

3×27

300

G.655

40×10G

ultra-longhaul

M40.10G100-25A-652

100

25×22

2000

G652

M40.10G100-38A-652

100

38×22

3040

G.652

M40.10G100-20B-652

100

20×27

2000

G.652

80×10G

ultra-longhaul

M80.10G50-25A-652

50

25×22

2000

G.652

M80.10G50-38A-652

50

38×22

3040

G.652

M80.10G50-15B-652

50

15×27

2000

G.652

40×10G

ultra-longhaul

S40.10G100-A-652

100

1×44

160

G.652

S40.10G100-B-652

100

1×55

200

G.652

80×40G

M80.40G50-8A-652

50

8×22

640

G.652

M80.40G50-12A-652

50

12×22

960

G652

M80.40G50-16A-652

50

16×22

1280

G.652

M80.40G50-8A-655

50

8×22

640

G.655

M80.40G50-12A-655

50

12×22

960

G.655

M80.40G50-16A-655

50

16×22

1280

G.655

40×40G

M40.40G100-8A-652

100

8×22

640

G.652

M40.40G100-16A-652

100

16×22

1280

G.652

M40.40G100-8A-655

100

8×22

640

G.655

M40.40G100-16A-655

100

16×22

1280

G.655

80×100G

M80.100G50-18A-0-652

50

18×22

1440

G.652

M80.100G50-14A-0-652

50

14×22

1120

G652

M80.100G50-14A-1-652

50

14×22

1120

G.652

M80.100G50-10A-1-652

50

10×22

800

G.652

M80.100G50-16A-0-655

50

16×22

1280

G.655

M80.100G50-16A-0-655

50

10×22

800

G.655

M80.100G50-14A-1-655

50

14×22

1120

G.655

M80.100G50-10A-1-655

50

10×22

800

G.655

3.3.3TheapplicationcodesofCWDMsystemshallbedenotedbythecharactersequences"nWx-ytz",andthemeaningandvalueofeachcharactershallbeinaccordancewiththosespecifiedinTable3.3.3.Forsingle-fiberbidirectionalsystems,character"B"shallbeplacedinfrontoftheapplicationcode.ForsystemswithFEC,character"F"maybeaddedtotheendoftheapplicationcode.

·8·

Table3.3.3ThemeaningandvalueofeachcharacterintheapplicationcodesofCWDMsystem

Character

Meaning

Valueanddefinitions

n

ThemaximumnumberofchannelssupportedbyaCWDMsystem

W

LossinthespanssupportedbyaCWDMsystem

S:Shorthaul;

L:Longhaul

x

ThemaximumnumberofspanssupportedbyaCWDMsystem

y

ThechanneltypesupportedbyacWDMsystem

0:1.25G;1:2.5G;2:10G

t

OAconfigurationofaCWDMsystem

A:Onlyoneopticalboosteramplifierandoneopticalpre-amplifierareused;

B:Onlyoneopticalboosteramplifierisused;

C:Onlyoneopticalpre-amplifierisused;

D:NoOAisused

z

ThetypeofopticalfibersupportedbyaCWDMsystem

2:ThetypeofopticalfiberisG.652;

3:ThetypeofopticalfiberisG.653;

5:ThetypeofoplicalfiberisG.655

3.3.4TheapplicationcodesofaCWDMsystemshallbeinaccordancewiththosespecifiedinTable3.3.4.

Table3.3.4ApplicationcodesofCWDMsystems

Systemcapacity

Applicationcode

Rangeofapplication

Targetdistance(km)

Fibertype

4×1.25G

4S1-0D2

Shorthaul(S)

42

G.652

4L1-0D2

Longhaul(L)

70

G.652

4×2.5G

4S1-1D2

Shorthaul(S)

36

G.652

4L1-1D2

Longhaul(L)

64

G.652

4×10G

4S1-2D2F

Shorthaul(S)

30

G.652

4L1-2D2

Longhaul(L)

46

G.652

4L1-2D2F

Longhaul(L)

55

G.652

8×1.25G

8S1-0D2

Shorthaul(S)

36

G.652

8L1-0D2

Longhaul(L)

64

G.652

8×2.5G

8S1-1D2

Shorthaul(S)

30

G.652

8L1-1D2

Longhaul(L)

58

G.652

8×10G

8S1-2D2F

Shorthaul(S)

24

G.652

8L1-2D2

Longhaul(L)

40

G.652

8L1-2D2F

Longhaul(L)

49

G.652

Note:"Targetdistance"isusedforsystemcategorization;insystemdesign,itshallbecalculatedinaccordancewithArticle4.2.2ofthiscode.

3.3.5TheapplicationcodeofWDMsystemshallbedeterminedaccordingtosuchfactorsasstationconfiguration,fiberparameters,systemcapacity,etc.

3.4CentralWavelengthAllocation

3.4.1ThenominalcentralwavelengthsandcentralfrequenciesofthechannelsofC-band32-channeland40-channelDWDMsystemsshallbeinaccordancewiththosespecifiedinTable3.4.1-1.ThenominalcentralwavelengthsandcentralfrequenciesofthechannelsofC-band80-channelDWDMsystemsshallbeinaccordancewiththosespecifiedinTable3.4.1-2.

·9·

Table3.4.1-1CentralwavelengthallocationplanforC-band40-channelDWDMsystems

C-band

serialNo.

Nominalcentralfrequency(THz)ataspacingof

100GHz

Nominalcentralwavelength(nm)

C-band

serialNo.

Nominalcentralfrequency(THz)ataspacingof

100GHz

Nominalcentralwavelength(nm)

1*

196.20

1527.99

25

193.60

1548.51

2*

196.10

1528.77

26

193.50

1549.32

1

196.00

1529.55

27

193.40

1550.12

2

195.90

1530.33

28

193.30

1550.92

3

195.80

1531.12

29

193.20

1551.72

4

195.70

1531.90

30

193.10

1552.52

5

195.60

1532.68

31

193.00

1553.33

6

195.50

1533.47

32

192.90

1554.13

7

195.40

1534.25

33

192.80

1554.94

8

195.30

1535.04

34

192.70

1555.75

9

195.20

1535.82

35

192.60

1556.55

10

195.10

1536.61

36

192.50

1557.36

11

195.00

1537.40

37

192.40

1558.17

12

194.90

1538.19

38

192.30

1558.98

13

194.80

1538.98

39

192.20

1559.79

14

194.70

1539.77

40

192.10

1560.61

15

194.60

1540.56

3*

192.00

1561.42

16

194.50

1541.35

4*

191.90

1562.23

17

194.40

1542.14

5*

191.80

1563.05

18

194.30

1542.94

6*

191.70

1563.86

19

194.20

1543.73

7*

191.60

1564.68

20

194.10

1544.53

8*

191.50

1565.50

21

194.00

1545.32

9*

191.40

1566.31

22

193.90

1546.12

10*

191.30

1567.13

23

193.80

1546.92

11

191.20

1567.95

24

193.70

1547.72

12*

191.10

1568.77

Notes:1DWDMsstemswith32-channelsinonebandshouduseNo.9-N6.40centralwavelengths;DWDMsystemswith32-channelsintwoseparatebandsshoulduseNo.1-No.16andNo.25-No.40centralwavelengths.

2lrensmarkedwith”+"arescalablewavelengths,whichmeybeusedforDWDMsystemswith41-52chanels.

Table3.4.1-2CentralwavelengthallocationplanforC-band80-channelDWDMsystems

C-band

serialNo.

Nominalcentralfrequency(THz)ataspacingof

50GHz

Nominalcentralwavelength(nm)

C-band

serialNo.

Nominalcentralfrequency(THz)ataspacingoff

50GHz

Nominalcentralwavelength(nm)

1*

196.25

1527.60

9

195.65

1532.29

2*

196.20

1527.99

10

195.60

1532.68

3*

196.15

1528.38

11

195.55

1533.07

4*

196.10

1528.77

12

195.50

1533.47

1

196.05

1529.16

13

195.45

1533.86

2

196.00

1529.55

14

195.40

1534.25

3

195.95

1529.94

15

195.35

1534.64

4

195.90

1530.33

16

195.30

1535.04

5

195.85

1530.72

17

195.25

1535.43

6

195.80

1531.12

18

195.20

1535.82

了

195.75

1531.51

19

195.15

1536.22

8

195.70

1531.90

20

195.10

1536.61

·10·

Table3.4.1-2(continued)

C-band

serialNo.

Nominalcentralfrequency(THz)ataspacingof

50GHz

Nominalcentralwavelength(nm)

C-band

serialNo.

Nominalcentralfrequency(THz)ataspacingof

50GHz

Nominalcentralwavelength(nm)

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

36

194.30

1542.94

76

192.30

1558.98

37

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

41

194.05

1544.92

5*

192.05

1561.01

42

194.00

1545.32

6*

192.00

1561.42

43

193.95

1545.72

7

191.95

1561.83

44

193.904

1546.12

8

191.90

1562.23

45

193.85

1546.52

9*

191.85

1562.64

46

193.80

1546.92

10

191.80

1563.05

47

193.75

1547.32

11*

191.75

1563.45

48

193.70

1547.72

12*

191.70

1563.86

49

193.65

1548.11

13*

191.65

1564.27

50

193.60

1548.51

14*

191.60

1564.68

51

193.55

1548.91

15*

191.55

1565.09

52

193.50

1549.32

16*

191.50

1565.50

53

193.45

1549.72

17*

191.45

1565.90

54

193.40

1550.12

18*

191.40

1566.31

55

193.35

1550.52

19*

191.35

1566.72

56

193.30

1550.92

20*

191.30

1567.13

57

193.25

1551.32

21*

191.25

1567.54

58

193.20

1551.72

22*

191.20

1567.95

59

193.15

1552.12

23*

191.15

1568.36

60

193.10

1552.52

24*

191.10

1568.77

Note:Itemsmarkedwith"*arescalablewavelengths,whichmaybeusedforDWDMsystemswith81-104channels.

3.4.2ThenominalcentralwavelengthsofthechannelsofCWDMsystemsshallbeinaccordancewiththosespecifiedinTable3.4.2.

·11·

Table3.4.2CWDMsystemchannelwavelengthallocationplan

SerialNo.

Nominalcentralwavelength(nm)

SerialNo.

Nominalcentralwavelength(nm)

1

1271

10

1451

2

1291

11

1471*

3

1311

12

1491*

4

1331

13

1511*

5

1351

14

1531*

6

1371

15

1551*

7

1391

16

1571*

8

1411

17

1591*

9

1431

18

1611*

Notes:1Thewavelengthsmarkedwithan"*"shallbeadoptedby8-channelCWDMsystems.

2Exceptfor8-channelCWDMsystems,wavelengthsmaybeselectedfromthetableabove.

3.5MainPathInterface

3.5.1ThereferencepointofthepathinterfacepfDWDMsystemsshallcomplywiththefollowingrequirement(Figure3.5.1-1andFigure3.5.1-2):

Figure3.5.1-1ReferencepointsofDWDMsystem

MPI-RM

(R)OADM

MPI-SM

R,

OTU

R

clientdevice

λ,,…,2

21,…,λm,λoe

λ,,…,λm,2e

MPI-SM

MPI-RM

Figure3.5.1-2ReferencepointsofDWDMsystem(R)OADM

1Thereferencepointontheopticalfiberattheoutputopticalconnectoroftheclientsignaltransmitteris"S";thereferencepointattheinputtotheclientsignalreceiveropticalconnectoris"R".

2ThereferencepointontheopticalfiberbetweentheoutputopticalconnectoroftheOTUandOMUis"S,";thereferencepointontheopticalfiberbetweentheinputopticalconnectoroftheOTUandODUis"R".

3ThereferencepointontheopticalfibrejustaftertheoutputopticalconnectorofOA(usedforopticalpoweramplification)thatisbehindtheOMis"MPI-SM";thereferencepointontheopticalfibre

·12·

justbeforetheinputopticalconnectorofOA(usedforpre-amplification)thatisinfrontofODUis"MPI-RM".

4ThereferencepointjustaftertheOA(usedforopticallineamplification)outputopticalconnectoris"SM";thereferencepointontheopticalfibrejustbeforetheOA(usedforopticallineamplification)inputopticalconnectoris"RM".

3.5.2DWDMsystems'mainpathinterfaceparameters,attenuationrange,dispersiontoleranceanddifferentialgroupdelay(DGD)shallbeinaccordancewiththefollowingrequirements:

1The32/40×2.5GDWDMsystemshallmeettherequirementsofthecurrentprofessionalstandardYD/T1060TechnicalRequirementsofOpticalWavelengthDivisionMultiplexing(WDM)System—32×2.5Gbit/sPart;

2The32/40×10GDWDMsystemshallmeettherequirementsofthecurrentprofessionalstandardYD/T1143TechnicalRequirementsofOpticalWavelengthDivisionMultiplexing(WDM)System—16×10Gb/sand32×10Gb/sParts;

3The80×10GWDMsystemshallmeettherequirementsofthecurrentprofessionalstandardYD/T1274TechnicalSpecificationforOpticalWavelengthDivisionMultiplexing(WDM)system—160×10Gb/sand80×10Gb/sParts;

4The40/80×40GWDMsystemshallmeettherequirementsofthecurrentprofessionalstandardYD/T1991TechnicalRequirementsforN×40Gbit/sOpticalWavelengthDivisionMulti-plexing(W