BS EN 61280-2-9-2009 光纤通信子系统的测试程序.第2-9部分:数字系统.密集波分多路系统光学信噪比的测量
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【英文标准名称】:Fibreopticcommunicationsubsystemtestprocedures—Part2-9:Digitalsystems—Opticalsignal-to-noiseratiomeasurementfordensewavelength-divisionmultiplexedsystems
【原文标准名称】:光纤通信子系统的测试程序.第2-9部分:数字系统.密集波分多路系统光学信噪比的测量
【标准号】:BSEN61280-2-9-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-05-31
【实施或试行日期】:2009-05-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:通信系统;定义;数字的;数字信号;电气工程;纤维光学;输入功率;接口;跳动;测量;测量设备;测量技术;多通道的;多路传送;乱真信号;光波导;光学;接收机;灵敏度;灵敏度级别;信号电平;信号;信号干扰比;波谱;光谱分析;电信;试验
【英文主题词】:Communicationsystems;Definitions;Digital;Digitalsignals;Electricalengineering;Fibreoptics;Inputpower;Interfaces;Jitter;Measurement;Measuringequipment;Measuringtechniques;Multichannels;Multiplex;Noise(spurioussignals);Opticalwaveguides;Optics;Receivers;Sensitivity;Sensitivitylevels;Signallevel;Signals;Signal-to-interferenceratio;Spectra;Spectralanalysis;Telecommunications;Testing
【摘要】:ThispartofIEC61280providesaparameterdefinitionandatestmethodforobtainingopticalsignal-to-noiseratio(OSNR)usingapparatusthatmeasurestheopticalspectrumatamultichannelinterface.Becausenoisemeasurementismadeonanopticalspectrumanalyzer,themeasurednoisedoesnotincludesourcerelativeintensitynoise(RIN)orreceivernoise.Threeimplementationsforanopticalspectrumanalyser(OSA)arediscussed:adiffractiongrating-basedOSA,aMichelsoninterferometer-basedOSA,andaFabry-Perot-basedOSA.PerformancecharacteristicsoftheOSAthataffectOSNRmeasurementaccuracyareprovided.AtypicalopticalspectrumatamultichannelinterfaceisshowninFigure1.Importantcharacteristicsareasfollows.?ThechannelsareplacednominallyonthegriddefinedbyITURecommendationG.694.1.[4]?Individualchannelsmaybenon-existentbecauseitisanetworkdesignedwithopticaladd/dropdemultiplexersorbecauseparticularchannelsareoutofservice.?Bothchannelpowerandnoisepowerareafunctionofwavelength.ForcalculatingtheOSNR,themostappropriatenoisepowervalueisthatatthechannelwavelength.However,withadirectspectralmeasurement,thenoisepoweratthechannelwavelengthisincludedinthesignalpowerandisdifficulttoextract.Anestimateofthechannelnoisepowercanbemadebyinterpolatingthenoisepowervaluebetweenchannels.Theaccuracyofestimatingthenoisepoweratthesignalwavelengthbyinterpolatingthenoisepoweratanoffsetwavelengthcanbesignificantlyreducedwhenthesignalspectrumextendsintothegapbetweenthesignalsandwhencomponentssuchasadd-dropmultiplexersalongthetransmissionspanmodifythespectralshapeofthenoise.TheseeffectsarediscussedinfurtherdetailinAnnexB,andcanmakethemethodofthisdocumentunusableforsomesituations.Insuchcases,wheresignalandnoisecannotbesufficientlyseparatedspectrally,itisnecessarytousemorecomplexseparationmethods,likepolarizationortime-domainextinction,ortodeterminesignalqualitywithadifferentparameter,suchasRIN.Thisisbeyondthescopeofthecurrentdocument.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:26P.;A4
【正文语种】:英语
【原文标准名称】:光纤通信子系统的测试程序.第2-9部分:数字系统.密集波分多路系统光学信噪比的测量
【标准号】:BSEN61280-2-9-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-05-31
【实施或试行日期】:2009-05-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:通信系统;定义;数字的;数字信号;电气工程;纤维光学;输入功率;接口;跳动;测量;测量设备;测量技术;多通道的;多路传送;乱真信号;光波导;光学;接收机;灵敏度;灵敏度级别;信号电平;信号;信号干扰比;波谱;光谱分析;电信;试验
【英文主题词】:Communicationsystems;Definitions;Digital;Digitalsignals;Electricalengineering;Fibreoptics;Inputpower;Interfaces;Jitter;Measurement;Measuringequipment;Measuringtechniques;Multichannels;Multiplex;Noise(spurioussignals);Opticalwaveguides;Optics;Receivers;Sensitivity;Sensitivitylevels;Signallevel;Signals;Signal-to-interferenceratio;Spectra;Spectralanalysis;Telecommunications;Testing
【摘要】:ThispartofIEC61280providesaparameterdefinitionandatestmethodforobtainingopticalsignal-to-noiseratio(OSNR)usingapparatusthatmeasurestheopticalspectrumatamultichannelinterface.Becausenoisemeasurementismadeonanopticalspectrumanalyzer,themeasurednoisedoesnotincludesourcerelativeintensitynoise(RIN)orreceivernoise.Threeimplementationsforanopticalspectrumanalyser(OSA)arediscussed:adiffractiongrating-basedOSA,aMichelsoninterferometer-basedOSA,andaFabry-Perot-basedOSA.PerformancecharacteristicsoftheOSAthataffectOSNRmeasurementaccuracyareprovided.AtypicalopticalspectrumatamultichannelinterfaceisshowninFigure1.Importantcharacteristicsareasfollows.?ThechannelsareplacednominallyonthegriddefinedbyITURecommendationG.694.1.[4]?Individualchannelsmaybenon-existentbecauseitisanetworkdesignedwithopticaladd/dropdemultiplexersorbecauseparticularchannelsareoutofservice.?Bothchannelpowerandnoisepowerareafunctionofwavelength.ForcalculatingtheOSNR,themostappropriatenoisepowervalueisthatatthechannelwavelength.However,withadirectspectralmeasurement,thenoisepoweratthechannelwavelengthisincludedinthesignalpowerandisdifficulttoextract.Anestimateofthechannelnoisepowercanbemadebyinterpolatingthenoisepowervaluebetweenchannels.Theaccuracyofestimatingthenoisepoweratthesignalwavelengthbyinterpolatingthenoisepoweratanoffsetwavelengthcanbesignificantlyreducedwhenthesignalspectrumextendsintothegapbetweenthesignalsandwhencomponentssuchasadd-dropmultiplexersalongthetransmissionspanmodifythespectralshapeofthenoise.TheseeffectsarediscussedinfurtherdetailinAnnexB,andcanmakethemethodofthisdocumentunusableforsomesituations.Insuchcases,wheresignalandnoisecannotbesufficientlyseparatedspectrally,itisnecessarytousemorecomplexseparationmethods,likepolarizationortime-domainextinction,ortodeterminesignalqualitywithadifferentparameter,suchasRIN.Thisisbeyondthescopeofthecurrentdocument.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:26P.;A4
【正文语种】:英语
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