您的位置: 标准下载 » 国际标准 » BS 英国标准 »

BS EN 61280-4-4-2006 光纤通信子系统基本试验程序.光缆设施和链路.已安装链路的偏振模式色散测量

作者:标准资料网 时间:2024-05-13 16:02:22  浏览:9948   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:Fibreopticcommunicationsubsystembasictestprocedures-Cableplantsandlinks-Polarizationmodedispersionmeasurementforinstalledlinks
【原文标准名称】:光纤通信子系统基本试验程序.光缆设施和链路.已安装链路的偏振模式色散测量
【标准号】:BSEN61280-4-4-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-05-31
【实施或试行日期】:2006-05-31
【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】:公共汽车;电缆网;电缆;通信系统;连接工艺;色散;电气工程;电子工程;光纤;玻璃纤维电缆;测量;单模纤维;光学设备;光波导;偏振;测试;波长
【英文主题词】:Bus;Cableplants;Cablednetworks;Cables;Communicationchains;Communicationsystems;Connectiontechnology;Dispersion(waves);Electricalengineering;Electronicengineering;Fibreoptics;Glassfibrecables;Measurement;Monomodefibres;Opticaldevices;Opticalwaveguides;Polarizationmodedispersion;Polarization(wavephysics);Testing;Wavelengths
【摘要】:ThispartofIEC61280providesuniformmethodsofmeasuringpolarizationmodedispersion(PMD)ofsingle-modeinstalledlinks.Aninstalledlinkistheopticalpathbetweentransmitterandreceiver,oraportionofthatopticalpath.Thesemeasurementsmaybeusedtoassessthesuitabilityofagivenlinkforhighbitrateapplicationsortoprovideinsightontherelationshipsofvariousrelatedtransmissionattributes.Theprinciplesofthisdocumentarealignedwiththoseoftheopticalfibreandopticalfibrecabletestmethod,IEC60793-1-48(seeBibliography),whichfocusesonaspectsrelatedtothemeasurementoffactorylengths.Instead,thisdocumentfocusesonthemeasurementmethodsandrequirementsformeasuringlonglengthsthatmightbeinstalled–andthatmightalsoincludeotheropticalelements,suchasamplifiers,DWDMcomponents,multiplexers,etc.PMDisastatisticalparameter.Thereproducibilityofmeasurementsdependsontheparticularmethod,butislimitedalsobythePMDlevelofthelink.Gisin[3]5)derivedatheoreticallimittothisreproducibility,byassuminganinfiniterangeofmeasuredwavelengthsandidealmeasurementconditions.WiththeexceptionofMethodD,allmethodsinthisdocumentmaybeusedtomeasurethePMDinthegainbandoflinksthatincludepumpedopticalamplifiers.Fortheselinks,amplifiedspontaneousemission(ASE)noisecangeneratedepolarizedspectralenergyintheneighbourhoodofthemeasurementwavelength.Thiswill,ingeneral,reducetheaccuracyofthemeasurement.ForMethodsA,B,C,EandF,thiseffectcanbemoderatedbyimplementinganopticalorelectricalfilteratthereceiveend.However,opticalfilteringwillnotremovetheASErightunderthesignalspectrum.Theaccuracywillthenbelimitedbyalowerdegreeofpolarization(DOP),ifthespectralwidthofthefiltercannotbesufficientlyreducedaswithabroadbandsource.LowerDOPmayrequirethesignaltobeintegratedlongertobemeaningfulortheresultwillbecometoonoisyandinterpretationwillbeerroneous.NoneofthemethodsissuitableformeasuringthePMDoflinkswithpolarizationdependentloss(PDL)inexcessof10dB.LinkswithPDLvalueslessthan1dBcanbemeasuredwithreasonableaccuracy.MeasurementaccuracymaybecompromisedbythepresenceofPDLinexcessof1dB.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:70P.;A4
【正文语种】:英语


下载地址: 点击此处下载
【英文标准名称】:Informationtechnology--TopicMaps--Part4:Canonicalization
【原文标准名称】:信息技术.主题图.第4部分:规范化
【标准号】:JISX4157-4-2010
【标准状态】:现行
【国别】:
【发布日期】:2010-10-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonInformationTechnology
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:A14
【国际标准分类号】:35_240_30
【页数】:16P;A4
【正文语种】:日语


【英文标准名称】:Textiles;Wovenfabrics;Determinationofbreakingstrengthandelongation(Stripmethod)
【原文标准名称】:纺织品.机织物.断裂强度和伸长的测定(长条法)
【标准号】:ISO5081-1977
【标准状态】:作废
【国别】:国际
【发布日期】:1977-03
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC38
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;试验;试样;抗拉试验;织物;材料强度;机织物;断裂伸长;拉力试验;纺织材料;测定;抗拉强度
【英文主题词】:fabrics;textiles;testing;tensiletesting;strengthofmaterials;testspecimens;tensilestrength;testequipment;elongationatfracture;tests;tensiontests;wovenfabrics;determination
【摘要】:
【中国标准分类号】:W04
【国际标准分类号】:6610
【页数】:8P;A4
【正文语种】:英语