Re-modulated technology of WDM-PON employing diffe- rent DQPSK downstream signals-中国Betway体育网页登陆

摘要 Thispaperproposesakindofmodulationarchitectureforwavelength-division-multiplexingpassiveopticalnetwork(WDM-PON)employingopticaldifferentialquadraturephaseshiftkeying(DQPSK)downstreamsignalsandtwodifferentmodu-lationformatsofre-modulatedupstreamsignals.Attheopticallineterminal(OLT),10Gbit/ssignalismodulatedwithDQPSK.Attheopticalnetworkunit(ONU),partofthedownstreamsignalisre-modulatedwithon-offkeying(OOK)orinverse-return-to-zero(IRZ).SimulationresultsshowtheimpactonthesystememployingNRZ,RZandcarrier-suppressedreturn-to-zero(CSRZ).Theanalysesalsoreflectthatthearchitecturecanrestrainchromaticdispersionandchannelcrosstalk,whichmakesitthebestarchitectureofaccessnetworkinthefuture.

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Re-modulated technology of WDM-PON employing diffe- rent DQPSK downstream signals

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