【英文标准名称】:Opticalfibres-Measurementmethodsandtestprocedures-Differentialmodedelay
【原文标准名称】:光学纤维.测量方法和试验规程.模时延差
【标准号】:BSEN60793-1-49-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2003-12-15
【实施或试行日期】:2003-12-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;分类;测量;质量保证;包络延时;多模光纤;定义;特性;光波导;尺寸;电气工程;光电子学;规范;设计;单模纤维
【英文主题词】:
【摘要】:ThispartofIEC60793describesamethodforcharacterizingthemodalstructureofagraded-indexmultimodefibre.Thisinformationisusefulforassessingthebandwidthperformanceofafibrewhenusedwithlasersources.Withthismethod,theoutputfromafibrethatissingle-modeatthetestwavelengthexcitesthemultimodefibreundertest.Theprobespotisscannedacrosstheendfaceofthefibreundertest,andtheopticalpulsedelayisdeterminedatspecifiedoffsetpositions.Thedifferenceinopticalpulsedelaytimebetweenthefastestandslowestmodesofthefibreundertestisdetermined.Theuserspecifiestheupperandlowerlimitsofradialoffsetpositionsoverwhichtheprobefibreisscannedinordertospecifydesiredlimitsofmodalstructure.Thisstandardappliesonlytomultimode,graded-indexglass-core(categoryA1)fibres.Thetestmethodiscommonlyusedinproductionandresearchfacilities,butisnoteasilyaccomplishedinthefield.
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:22P;A4
【正文语种】:英语