Optical-fiber-access-network-technology光纤接入网技术大学毕业

毕业设计（论文）外文文献翻译文献、资料中文题目：光纤接入网技术文献、资料英文题目：Opticalfiberaccessnetworktechnology文献、资料来源：文献、资料发表（出版）日期：院（部）：专业：班级：姓名：学号：指导教师：翻译日期：2017.02.14OpticalfiberaccessnetworktechnologyTheentiretelecommunicationnetworkaccordingtonetworkfunctionisdividedintothreesections:switching,transmission,andaccess.Accesstotelecommunicationsbusinesstransparenttousers,transmitspecific,accesstolocalswitchandtheuserthattheconnectionbetweentheparts,usuallyincludesubscriberlinetransmissionsystem,reuseequipment,crossingconnectiondeviceoruser/networkterminalequipment.Andactuallypickforbusinessentityisbusinessnodes.1.Accessnetworkdevelopmentprocess1.1AccessNetwork(AN:Accessbybusiness)referstoanodeinterface(SNI)andrelatedusersNetworkinterface(UNI)betweenaseriesoftransmitentity(suchaslinefacilitiesandtransmissionfacilities)fortransmissionconsistingoftelecommunicationbusinessprovidetherequiredtransmitloadcapacity,implementationsystemconfigurationspercentilemanagementinterfaceviaandmanagement.Accesscanbeseenaswithbusinessandapplicationirrelevanttransmissionnetwork,mainlyfinishcrossingconnection,reuseandtransmissionfunction,itistransparenttousersofsignaling.Basedonmodernoftelecommunicationnetworkaccessnetworkisintegratedserviceaccess,simplelocalvoiceaccesswillbeincreasinglycannotmeettherequirements,thevoice,dataandimagecomprehensiveaccessisbecomingaccessnetworkdevelopmenttrend.Afteryearsofdevelopment,accessnetworkdefinethoughdoesnotchange,butitsconnotationandformshaschangedsignificantly.Superiortraditionalaccessnetworkintegratedopticalfiberaccessnetworkwillbeusersaccessthefuturedevelopingtrend.OpticalfiberaccessfromSNItoUNIreferstoallorpartoftheaccessnetworkbyusingopticalfiberasmedium.ITU-Taboutaccessnetworkrecommendationsindicatethatfiber,useraccesssystemiscomposedofthreeparts:opticallineterminal(OLT),opticaldistributionnetwork(ODN)andopticalnetworkunit(ONU).1.2Accordingtotherequirementofsystemaccessframeworkandtheimportantcharacteristics,accessnetworkcanbesummarizedasthefollowing:1.2.1Accesstoaccessbusinessprovidesbearingcapacity,achievebusinesstransparenttransfer.1.2.2.Theaccessistransparenttouserssignaling,exceptforsomeuserssignalingformatconversionoutside,signalingandbusinessprocessingfunctionisstillinbusinessnode.1.2.3Theintroductionofshouldnotberestrictedaccessallkindsofexistingaccesstypesandbusiness,accessnetworkshouldthroughthelimitedstandardizationinterfaceandbusinessnodeconnected.1.2.4Accessnetworkhaveindependentfromthebusinessnodeinthenetworkmanagementsystem,thissystemthroughthestandardizedinterfacesconnectedTMN,accessnetworkoperationforimplementationTMN,maintenanceandmanagement.2.fiberstructure2.1generallinearstructure.Refertothepublicbus,fiberaseachuserterminalsthroughdirectconnectwithbuscouplernetworkstructure.Itscharacteristicissharingbackbonefiber,savelinestoremovenodeinvestment,thedemandishigher,dynamicrange,interferewitheachothereffectissmall.Defectislossofaccumulation,thebackbonefiberuseracceptancedependenceisstrong.2.2ringstructure.Referstoallshareafiberopticlinknode,fiberopticlinkitsendtoendtheclosedloopnetworkstructure.Characteristicisself-healing,namelycanberealizedwithoutintervention,thenetworkcanbeinarelativelyshortperiodoftimetorecoverfromfailurehavepreachedbusiness,highreliability.Defectishangedbythenumberofusersofmonocyliclimited,polycyclicinterchangeisrelativelycomplex,notsuitableforCATV,etcFenPeiXingbusiness.2.3starstructure.Thisstructureisactuallypoint-to-pointway,eachuserterminalsinthecentralnodethroughwithcontrolandswitchfunctionsoftheastralcouplersexchangeinformation.Characteristicsofsimplestructure,maintenanceisconvenientandeasytoupgradeandexpansionbetween,eachuserrelativelyindependent,goodsecrecy,businessadaptability.Defectishigher,networkingrequiredfibercostofpoorflexibility,highreliabilityrequirementsofcentralnode.2.4treestructure.Similartothebranches,ahierarchicalstructure,shapeintransferboxesandFenXianHeplaceadoptsmultipleopticaldistributor,willsignalfilteringdowntopendinningsallocation,havestrongcontrolcoordination.Characteristicissuitableforbroadcastingbusiness.Defectispowerlossisbigger,two-waycommunicationdifficultybigger.3．ThestatusofopticalaccessnetworkinthemoderncommunicationOpticalfiberinrealizingnationalinformationmodernizationaccessplaysamoreandmoreimportantrole,isanindispensablepartofmoderncommunicationsnetwork.Moderncommunicationsnetworkbasicrealizedbasedonfiberbackbonetransmissionandexchange,andaccesssectionisstillrestrictedmoderntelecommunicationsfurtherdevelopmentandimprovementofthebottleneck,therefore,toconstructionofnationalinformationinfrastructure(NII),accessnetworkisthekey.Accessnetworktechnologydevelopment,willresultingreatchangesoftelecommunicationsandinformationnetwork,namely,voice,data,video,etc.Variouskindsofinformationtransmission,comprehensivebusinesstogetherforimplementingtheresourcessharing,andgraduallyoptimizedcommunicationnetwork,greatlyimprovingnetworkbenefits.Twoopticalfiberopticaltransmissiontechnologyaccesswiththecombinationoftheaccesstechnology3.1Lighttransmissiontechnolog