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【英文标准名称】:Opticalfibres.Measurementmethodsandtestprocedures.Bandwidth
【原文标准名称】:光学纤维.测量方法和试验规程.频带宽度
【标准号】:BSEN60793-1-41-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-11-30
【实施或试行日期】:2010-11-30
【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】:频带宽度;定义(术语);尺寸规格;电气工程;光纤;频率;频率范围;测量;测量技术;动量;多模纤维;光学测量;光波导;特性;脉冲变形;抽样方法;测试;测试装置
【英文主题词】:Bandwidths;Definitions;Dimensions;Electricalengineering;Fibreoptics;Frequencies;Frequencyranges;Measurement;Measuringtechniques;Momentum;Multimodefibres;Opticalmeasurement;Opticalwaveguides;Properties;Pulsedistortion;Samplingmethods;Testing;Testingdevices
【摘要】:ThispartofIEC60793describesthreemethodsfordeterminingandmeasuringthemodalbandwidthofmultimodeopticalfibres(seeIEC60793-2-10,IEC60793-30seriesandIEC60793-40series).Thebasebandfrequencyresponseisdirectlymeasuredinthefrequencydomainbydeterminingthefibreresponsetoasinusoidalymodulatedlightsource.Thebasebandresponsecanalsobemeasuredbyobservingthebroadeningofanarrowpulseoflight.Thecalculatedresponseisdeterminedusingdifferentialmodedelay(DMD)data.Thethreemethodsare:?MethodA–Timedomain(pulsedistortion)measurement?MethodB–Frequency-domainmeasurement?MethodC–Overfilledlaunchmodalbandwidthcalculatedfromdifferentialmodedelay(OMBc)MethodsAandBcanbeperformedusingoneoftwolaunches:anoverfilledlaunch(OFL)conditionorarestrictedmodelaunch(RML)condition.MethodCisonlydefinedforA1a.2(andA1a.3inpreparation)multimodefibreandusesaweightedsummationofDMDlaunchresponseswiththeweightscorrespondingtoanoverfilledlaunchcondition.Therelevanttestmethodandlaunchconditionshouldbechosenaccordingtothetypeoffibre.
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:32P.;A4
【正文语种】:英语