【英文标准名称】:Fibreopticcommunicationsystemdesignguides-Part5:Accommodationandcompensationofdispersion
【原文标准名称】:光纤通信系统的设计指南.第5部分:传播体系的适应性和报酬
【标准号】:IEC/TR61282-5-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-04
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC86C
【标准类型】:()
【标准水平】:()
【中文主题词】:纤维光学;光纤;光波导;设计;颜色的扩散;电信;模拟信号;数字信号;分散
【英文主题词】:Analoguesignals;Chromaticdispersion;Design;Digitalsignals;Dispersion;Fibreoptics;Opticalwaveguides;Telecommunications
【摘要】:ThispartofIEC61282,whichisatechnicalreport,appliestotheaccommodationandcompensationofdispersioninfibreopticcommunicationsystems.Generally,dispersioncompensationandaccommodationisusedinthe1550nmregionwithcablesincorporatingconventional(dispersion-unshifted)single-modecategoryB1fibreasshowninIEC60793-1andIEC60793-2.Inthiswavelengthregion,thefibrehasapositivedispersioncoefficientthataveragesatabout17ps/nm-km.Therearetwosubcategoriesofsuchfibre.ThecutoffwavelengthofB1fibreislowenoughforthefibretobeusedineitherthe1310nmorthe1550nmregion.Suchfibremakesupthevastmajorityofinstalledfibreopticcableworldwide.ThecutoffwavelengthofB1.2fibreishighenoughforthefibretobeusedinthe1550nmregiononly.Suchfibreisusedinsomesubmarinesystems.Smallervaluesofdispersionareattainablewithdispersion-shiftedcategoryB2fibreandwithnon-zero-dispersioncategoryB4fibre.Dispersionaccommodationorcompensationmaysometimesbeusedwiththesefibretypesaswell,butonlycategoryB1fibreswillbediscussedinthistechnicalreport.Compensationreferstotechniquesorcomponentsthatreducethevalueofthedispersionorthedispersionslopeofafibreopticlinktoenabletransmissionatdigitalbit-ratesandatanaloguefrequencieshigherthanwouldbepossiblewithoutthesetechniques.Effectively,thecumulativezero-dispersionwavelengthoftheopticalpathismovedfromthe1310nmregiontosomewhereinthe1550nmregion.Alinkofdispersion-unshiftedB1fibreandanin-linedispersioncompensatorcanbemadetoresemble,insomecumulativerespects,alinkofdispersion-shiftedB2fibre.Examplesofpassivedispersioncompensatingcomponentsincludedispersion-compensatingfibre,fibreBragggratings,andetalons.Accommodationreferstotechniquesorcomponentsthatutilizedispersiontoenabletransmissionatdigitalbit-ratesandatanaloguefrequencieshigherthanwouldbepossiblewithoutthesetechniques.Examplesofactivedispersionaccommodationincludeopticalorelectricalprechirpingatthetransmitter,dispersion-assistedtransmission,midspanspectralinversion,andreceiversignalprocessing.Accommodationwillbetreatedinfuturerevisionsofthistechnicalreport.Managementreferringtotechniquesthatvarythedispersioncoefficientalongtheopticalpath(bothsignandmagnitude)remainsunderstudy.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:39P.;A4
【正文语种】:英语