基于相位调制器产生光毫米波的全双工光纤无线通信系统

:025827025(2007)0720935205,,,,(,410082)(RoF)40GHz,,2.5Gbit/s,,40km/2.5Gbit/s,0.5dBm,,,;;;;;TN929.11AFull2DuplexRadio2over2FiberSystemwithOpticalMillimeter2WaveGenerationUtilizingOpticalPhaseModulatorWENHong,CHENLin,PIYa2zhi,YUJian2jun,WENShuang2chun(SchoolofComputerandCommunication,HunanUniversity,Changsha,Hunan410082,China)AbstractAfull2duplexradio2over2fiber(RoF)systemwithopticalmillimeter2wavegenerationutilizingopticalphasemodulatorwasdesignedandexperimentallydemonstrated.Carriersuppressiondoublesidebandopticalsignalwith40GHzrepetitivefrequencyisgeneratedbyusinganopticalphasemodulatoralongwithopticalfilteringtechnique.Anopticalinterleaverwasemployedtoseparatethetwofirst2ordersidebandcarriers,oneofthecarrierswasusedtocarry2.5Gbit/sdownstreamdata,whiletheotherwassenttobasestationforreuseformodulatingupstreamdata.Itwasexperimentallydemonstratedthatthe2.5Gbit/sdataforbidirectionaltransmissionweretransmittedover40kmstandardsinglemodefiber(SMF228)withlessthan0.5dBmpowerpenalty.Byusingopticalphasemodulatoralongwithopticalinterleavertogenerateopticalmm2wave,andadoptingthewavelengthreusetechnique,theproposedRoFsystembecomessimpleandcost2effective.Keywordsopticalcommunication;radio2over2fiber;phasemodulator;opticalmillimeter2wave;wavelengthreuse;opticalinterleaver:2006212213;:2007203213:(20040532005):(1981),,,,E2mail:[e-mail]:(1966),,,,E2mail:[e-mail]1IP(IPTV)(VOD),(RoF),[113][26],,[5],34720077CHINESEJOURNALOFLASERSVol.34,No.7July,2007,[710],,[7],,[810][10]2.5Gbit/s,,,,,22.1/1,:,,,-,;,,12.5Gbit/sFig.1Schematicdiagramof2.5Gbit/sfull2duplexRoFsystem2.2,oRF,Eout(t)=Eon=-Jn()cos(o+nRF)t+n2,(1)Eo,Jn()n,n,,=VRF/V,VRF,V,[1],,,Jn()n,J1()J2(),J2()0,(J2(),J3()),(1)Eout1(t)µEoJ0()cos(ot)+EoJ1()cos(o+RF)t+2+EoJ1()cos(o-RF)t+2(2)63934,Eout2(t)µEoJ1()cos(o+RF)t+2+EoJ1()cos(o-RF)t+2(3);(OC),L,,,(3)1[13]Eout2(t)µEoJ1()cos(o+RF)t+2+1+EoJ1()cos(o-RF)t+2+1,(4)11=-n2LcDfRFfo2n=1=-LcDfRFfo2,c,D,fRF,fo,I(t)E2o[J1()]2cos(2RFt),(5)I(t),E2o[J1()]2,,322.5Gbit/s,31552.5nm(DFB2LD)LiNbO3(PM)V=10V,1V20GHz,=0.3=VRFV(VRF=0.3V/1),1V4(a)35dBm,,0.15nm,25/50GHz(IL),2dB,4(b),2Fig.2Experimentalsetupforfull2duplexRoFsystem7397:3Fig.3Imageofexperimentalsetup,40GHz,30dB50/100GHz4(c)2(MZM)2.5Gbit/s,4(d);,40km(SMF)2(ii)(EDFA),3dBm,(OS)4(e)30dB,0.5nm(TOF)()50GHzPIN,,,(EA),40GHz,2.8GHz(LPF),40GHz10GHz;40GHz,10GHz2(v),40km,4Fig.4SpectraatdifferentlocationslabeledinFig.2(FBG),,2(iii)2.5Gbit/s24(f),3dBm40km2.5Gbit/s83934-,2.8GHz,,2(iv)2(i),40km(B2T2B)40km(BER),50.5dBm,540kmFig.5BERcurvesforbothdown2linkandup2linkdataover40kmSMFtransmission42.5Gbit/s,,,,,,,40km,0.5dBm;1GrahamH.Smith,DalmaNovak,ZaheerAhmed.Overcomingchromatic2dispersioneffectsinfiber2wirelesssystemsincorporatingexternalmodulators[J].IEEETrans.MicrowaveTheoryTechnol.,1997,45(8):141014152M.Attygalle,C.Lim,A.Nirmalathas.Extendingopticaltransmissiondistanceinfiberwirelesslinksusingpassivefilteringinconjunctionwithoptimizedmodulation[J].J.LightwaveTechnol.,2006,24(4):170317093YeQing,LiuFeng,QuRonghuietal..Fibercommunicationprojectofmillimeter2wavesubcarrierbasedonfibergrating[J].ActaOpticaSinica,2006,26(10):14641468,,.[J].,2006,26(10):146414684A.Wiberg,P.P.Millan,M.V.Andresetal..Fiber2optic40GHzmm2wavelinkwith2.5Gb/sdatatransmission[J].IEEEPhoton.Technol.Lett.,2005,17(9):193819405G.Qi,J.Yao,J.Seregelyietal..Opticalgenerationanddistributionofcontinuouslytunablemillimeter2wavesignalsusinganopticalphasemodulator[J].J.LightwaveTechnol.,2005,23(9):268726956J.J.OReilly,P.M.Lane,R.Heidemannetal..Opticalgenerationofverynarrowlinewidthmillimeterwavesignals[J].Electron.Lett.,1992,28(25):230923117T.Kuri,K.Kitayama,Y.Takahashi.Asinglelight2sourceconfigurationforfull2duplex602GHz2bandradio2on2fibersystem[J].IEEETrans.MicrowaveTheoryTechnol.,2003,51(2):4314398A.Nirmalathas,D.Novak,C.Limetal..WavelengthreuseintheWDMopticalinterfaceofamillimeter2wavefiber2wirelessantennabasestation[J].IEEETrans.MicrowaveTheoryTechnol.,2001,49(10):200620129A.Kaszubowska,L.Hu,L.P.Barry.Remotedownconversionwithwavelengthreusefortheradio/fiberuplinkconnection[J].IEEEPhoton.Technol.Lett.,2006,18(4):56256410L.Chen,H.Wen,S.Wen.Aradio2over2fibersystemwithanovelschemeformillimeter2wavegenerationandwavelengthreuseforup2linkconnection[J].IEEEPhoton.Technol.Lett.,2006,18(19):2056205811FangZujie,YeQing,LiuFengetal..Progressofmillimeterwavesubcarrieropticalfibercommunicationtechnologies[J].ChineseJ.Lasers,2006,33(4):481488,,.[J].,2006,33(4):48148812ChiHao,ZhangXianmin,ShenLinfang.Inter2modulationdistortionanalysisforsingle2driveMach2Zehndermodulator[J].ActaOpticaSinica,2006,26(11):16191622,,.2[J].,2006,26(11):1619162213G.J.Meslener.Chromaticdispersioninduceddistortionofmodulatedmonochromaticlightemployingdirectdetection[J].J.QuantumElectron.,1984,QE220(10):120812169397: