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1、INVITEDPAPERAdvancedOpticalModulationFormatsChoiceoftherightmodulationformatiskeytobuildingflexibleandcost-effectivehigh-capacityopticallyroutedwavelengthdivisionmultiplexedfibernetworks.ByPeterJ.Winzer,SeniorMemberIEEE,andRene´-JeanEssiambre,MemberIEEEABSTRACT
2、Fiber-opticcommunicationsystemsformt
3、heDBDuobinaryhigh-capacitytransportinfrastructurethatenablesglobalDCFDispersion-compensatingfiberbroadbanddataservicesandadvancedInternetapplications.DCSDuobinarycarriersuppressedThedesireforhigherper-fibertransportcapacitiesand,attheDFBDistributedfeedbacklasersametime,thedriveforlowercostsperend-
4、to-endtransmittedDGDDifferentialgroupdelayinformationbithasledtoopticallyroutednetworkswithhighDIDelayinterferometerspectralefficiencies.Amongotherenablingtechnologies,DMDatamodulationadvancedopticalmodulationformatshavebecomekeytotheDMFDatamodulationformatdesignofmodernwavelengthdivisionmultiplex
5、ed(WDM)fiberDMLDirectlymodulatedlasersystems.Inthispaper,wereviewopticalmodulationformatsinDPSKDifferentialphaseshiftkeyingthebroadercontextofopticallyroutedWDMnetworks.WeDQPSKDifferentialquadraturephaseshiftkeyingdiscussthegenerationanddetectionofmultigigabit/sinten-DSTDispersion-supportedtransmi
6、ssionsity-andphase-modulatedformats,andhighlighttheirresil-EAMElectroabsorptionmodulatoriencetokeyimpairmentsfoundinopticalnetworking,suchasEMLElectroabsorptionmodulatedlaseropticalamplifiernoise,multipathinterference,chromaticEPDElectronicpredistortiondispersion,polarization-modedispersion,WDMcro
7、sstalk,FECForwarderrorcorrectionconcatenatedopticalfiltering,andfibernonlinearity.FMFrequencymodulationFWMFour-wavemixingKEYWORDS
8、Differentialphasemodulation;digitalmodulation;GVDGroupvelocitydispersionintensitymodulation;opticalcommunication;opticalnetworks;IFWMIntrachannelfour-wavemixingwaveleng
9、thdivisionmultiplexing(WDM)ISDInformationspectraldensityISIIntersymbolinterferenceITUInternationaltelecommunicationunionLISTOFACRONYMSIXPMIntrachannelcross-phasemodulationACRZAlternate-chirpreturn-to-zeroM-ASKMul
