光纤通信发展中的某些规律性认识_

[1]-。。。10。。“”“”“”。。、。。43007!4HuangDexiuWuhanNationalLaboratoryforOptoelectronics,HuazhongUniversityofScienceandTechnology,Wuhan,Hubei430074,Chin!a2070、、、。－、－、、。。。AbstractSince1970s,thefibercommunicationhasbecomethecoreofthewholeinformationnetworkandstronglypromotedthedevelopmentoftheentireinformationfieldswithoutstandingadvantagesofvastinformationbandwidth,lowtransmissionloss,lowcost,andsoon.Inthemeantime,someregularitiescanbefound,suchasthepulledbydemandandpushedbyadvancesintechnologies,quantitativechange-qualitativechange,unityofopposites,andnegationofnegation.Theseregularitiesinthedevelopmentofthefibercommunicationareoutlined.Itisusefultousetheseregularitiesinsomeactivitiesofthescientificresearch,teaching,makingthestrategicdecision,andsoon.Someissuesaboutthefutureofoptoelectronicsdevicesarealsodiscussed.Keywordsfibercommunication;optoelectronicdevice;regularityofdevelopment;dialecticsTN913.7doi:10.3788/LOP20094605.0077(I)ReviewonSomeDevelopmentLawsinOpticalFiberCommunicationI772009.05。、、。。。“”。。1876A.G.Bell。。“”2。“”19621.5MHz24。“”1001896G.Marconi45MHz850MHz204010GHz100GHz。/ADSL19989Mb/s。2060。2%。1950K.C.GaoG.A.Hockham[2]1966。~1014Hz109Hz5。1000dB/km3cm。1962、IBM5。。1970820nm20dB/km。。50THz。19742dB/km19761－－44.736Mb/s1880。198213km。20800.375274Mb/s、1.6km。1985FTG-4171310nm417Mb/s、50km。。2090“”“”。。、。NIIGIIRICE。2090WDMEDFA。。C=Bn1Bn。WDM3Rreamplifing,reshapingretimingWDM。WDM。1987EDFA[34]WDM。300～400km。78“”。1970WDMEDFA。。2080、、3W1980HeinrichHertz。191916、PCM1946、。。。1947[5]。1982IBM28kg。2090“”。20“”GSM(3G)TD-SCDMA4G“-”。“”FTTH。FTTH。“”。。26.8％5～1020Mb/sHDTV。xDSL、、、“”“”。。HDTV、、。FTTH。“”FTTH。FTTH。。2NGN、、、、。。。、、ASON、OBSOPSFTTxROF。。。35。“”、。792009.052.1。“、”。40～850MHz1250-1650nm。EDFA1530～1610nmC+L80nm。ηSE=Gb/sGHzbps/Hz2。200GHz(1.6nm)100GHz0.8nm50GHz0.4nm。25GHz0.2nm12.5GHz0.1nm1FWM。FWMΔληFWM∝n2AeffDΔλ2∝∝2,3n2AeffD。50%FWM4。。2。WDM。DWDM。1。-0.5dB-25dBε=BW@-0.5dB/BW@-25dBε＝1。BW@-0.5dB≥0.4~0.5ΔλBW@-25dB≤1.2~1.5Δλε0.25～0.5。ε≥1/31。1FWM25GHzε1。。ETDMOTDM、WDM、PDM2。ETDMSTM-1155.520Mb/s41DWDM≥≥≥≥≥≤≤≤≤≤≥≥≥≥≥1WDM280*CSRZ:DQPSK:OFDM:×STM-25639.813Gb/s。201515nmETDMSTM-256×4160Gb/s100Gb/s100GE。。ETDMETDM4OTDMOTDMWDM。OTDM、。OTDM。ETDMOTDM100Gb/s。、WDM。WDMPDM。TETMWDM。。160Gb/s100GHz1.6bps/Hz。ShannonC=Blog21+SN4BSN。S/N100BER=10－9400nm50THz350Tb/s。WDMEDFA80nm10THz70Tb/s。S。Shannon7bps/Hz。ASK40Gb/s100GHz0.4bps/Hz。。FSKPSK、。fc/Δf。109。1550nm194THzFSKPSK20MHz1MHz。DFB。。－。2。2.2。1/cost/bit。Dixon－Clapp。WDM2080Mb/s90Gb/sTb/sPb/s。3WDM2812009.05ETDM。STM－25640Gb/s。STM－162.5Gb/sSTM－6410Gb/sWDM。OTDMPDM。、OTDMPDM。1937-。E-mail:[e-mail]3ETDMWDM1.－[R].2008200896~82K.C.Gao,G.A.Hockham.ITT,UK;Dielectric-fibresurfacewaveguidesforopticalfrequencies[C].Proc.IEEE,1966,133(2):1151~11583E.Desurvire,J.R.Simpson,P.C.Becker.High-gainerbium-dopedtraveling-wavefiberamplifier[J].Opt.Lett.,1987,12(11):888~8904R.J.Mears,L.Reekie,I.M.Jaunceyetal..Low-noiseerbium-dopedfibreamplifieroperatingat1.54μm[J].Electron.Lett.,1987,23(19):1026~0285G.I.Zysman,J.A.Tarallo,R.E.Howardetal..Technologyevolutionformobileandpersonalcommunications[J].BellLabsTechnicalJ.,2000,5(1):107~12982