wdm-pon系统的传输技术研究-通信与信息系统专业毕业论文

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1、AbstractInrecentyears,withtherapidlygrowingdemandformultimediaservicesandthetrendofserviceconvergence,thepenetrationofopticalfiberinaccessnetworkisanultimatesolutiontobreakthelast-milebottleneckimposedbythecoppernetwork.Inthenearfuture,wavelength-div

2、ision-multiplexedpassiveopticalnetwork(WDM-PON)canbetheenablerofthenextgenerationopticalbroadbandaccessthatrequireslargebandwidth,protocoltransparencyandupgradeflexibility.Colorlessprogramatopticalnetworkunit(ONU)isanattractivesolutionforlow-costand

3、highefficiencyimplementationofWDM-PON,asitreducesthecostofmonitoringandmaintenanceofthesystem.ThispapermainlystudiesonRayleighbackscattcringeliminationandeffectofthechanneltransmissionperformanceinaWDM-PON.First,thecolorlessWDM-PONnetworkstructureisp

4、roposed,andwithoutconsideringthefiberRayleighbackscatteringofWDM-PONtransmissionperformanceisstudied.ThisColorlessWDM-PONusesthedirectre-modulationtechniquebasedontheMach-Zehndermodulator,andthepaperstudiestheChannePsBERperformanceoftheuplinksignalwh

5、enusingdifferentmodulationsandcodingschemesthroughsimulation.Secondly,onthebasisofthemoredetailedanalysisofthegenerationmechanismoftheWDM-PONRayleighbackscattering,makesacomparisonandanalysisoftheclassicmethodsofeliminatingRayleighscatteringeffect,an

6、dproposesanewringstructureofWDM-PON,whichremainscolorlessadvantage.Finally,OptisystemsoftwareisusedtoemulateinthisringWDM-PONstructure,andtheperformanceofthenetworktransmissionisdiscussed.Astheresult,thisringWDM-PONstructurecansupportuptoeightoptical

7、networkunitsthroughsimulatingandanalyzing.Keywords:WavelengthDivisionMultiplexingPassiveOpticalNetwork(WDM-PON),RayleighBackscattering(RBS)，ColorlessOpticalNetworkUnit(ColorlessONU),Re-modulated,ReflectiveSemiconductorOpticalAmplifier(RSOA)目录专用术语注释表1

8、第一章绪论41.1课题研究的背景41.2接入网中持续增长的带宽需求41.3WDM-PON屮瑞利散射的概述61.4本文的主要工作及论文结构7第二章WDM-PON和“无色化”技术的概述82.1WDM-PON技术体系82.1.1系统结构和工作原理82.1.2关键器件92.1.3技术优势152.2无色ONU技术研究162.2.1基于波长可调激光器的技术162.2.2采用宽带光谱分割式技术172.2.3采用注人FP-LD的无色ONU方案182.2.4基于波长重用的光环回技术192.3本章小结2122•••