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1、吉比特无源光网络GPON技术及其标准化Isdescribedinthispaper,themaintechnicalfeaturesofGPON,andfurtherexplainedindetailthefunctionofprotocollayer,theDBAmechanism,theONUactivateregistration,OMCI,suchaskeytechnologyandprinciple,alsointroducestheGPONcarryingtwospecificwaysaTDMbu
2、siness,aswellasthestandardizationofGPONtechnology.TheproposalofGPONtechnologyGPON(Gigabit-CapablePassiveOpticalNetwork,GigabitPassiveOpticalNetwork)technologyisaPassiveOpticalNetwork(PON)technologyisanimportantbranchoffamilyandothersimilartechnologiesinclud
3、ingAPON/BPON,EPONtechnologyandsoon.GPONisoneofthemostcloselywatchedopticalaccesstechnologiesinthenexttwotothreeyears.ConceptofGPON,asbyFSAN(FullServiceAccessNetwork,thewholebusinessAccessNetwork)isputforwardin2001,beforethis,FSAN/ITUalsoproposesandstandardi
4、zetheAPON,BPONtechnology(ITU-TG.983.Xseriesstandard),IEEEhasalsostartedtoEPONtechnologystandardizationandsoonofficiallyreleasedin2003IEEE802.3ah,markingtheEPONtechnologystandardizationworkcompleted.FSAN/ITUlaunchedthebiggestreasonisduetonetworkIPGPONtechnol
5、ogyprogressofaccelerationandATMtechnologybasedonATMtechniqueisgraduallyshrinkingbeforeAPON/severelyhinderedBPONtechnologyincommercialandpracticalaspects,urgentlyneedahightransferrateandoptimumIPbeareratthesametimewithintegratedserviceaccessabilityofopticala
6、ccesstechnology.Inthiscontext,theFSAN/ITUisbasedontheAPONstandard,redesigningthenewphysicallayertransmissionrateandtheTClayer,andintroducingnewGPONtechnologyandstandards.ThecompositionofGPONsystemAndothersimilarPONtechnology,GPONisalsoakindofthepointtomulti
7、pointtopologyofpassiveOpticalaccesstechnology,bythesideofthebureauofOLT(OpticalLineTerminal,theOpticalLineTerminal),theusersideONU(OpticalNetworkUnit,theOpticalNetworkUnit)andODN(OpticalDistributionNetwork,OpticalDistributionNetwork),thesystemreferenceconfi
8、gurationisshowninfigure1.Intheso-called"passive"referstoODNdoesnotcontainanyactiveelectronicdevicesandelectronicpowersupplies,allbytheopticalfiberandopticalpoints/combiner(Splitter)ofpassiveopticalcomp
