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Generation and distribution of a wide-band continuously tunable millimeter-wave signal with an optical external modulation technique

Generation and distribution of a wide-band continuously tunable millimeter-wave signal with an optical external modulation technique

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时间：2019-06-27

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1、3090IEEETRANSACTIONSONMICROWAVETHEORYANDTECHNIQUES,VOL.53,NO.10,OCTOBER2005GenerationandDistributionofaWide-BandContinuouslyTunableMillimeter-WaveSignalWithanOpticalExternalModulationTechniqueGuohuaQi,JianpingYao,SeniorMember,IEEE,JoeSeregelyi,StéphanePaquet,andClaudeBélisleAbstract—An

2、ewtechniquetogenerateanddistributeawide-Therefore,thehighestfrequencyofthesignalproducedbybandcontinuouslytunablemillimeter-wavesignalusinganopticaltheseDSBtechniquesislimitedbythebandwidthofthelaserexternalmodulatorandawavelength-fixedopticalnotchfilterisortheexternalmodulatorandthefiber

3、chromaticdispersion.Toproposed.Theopticalintensitymodulatorisbiasedtosuppresstheovercometheselimitations,anopticalgenerationschemethatodd-orderopticalsidebands.Thewavelength-fixedopticalnotchfilteristhenusedtofilterouttheopticalcarrier.Twosecond-orderusesnarrowbandwidthopticalcomponentsto

4、generatehigh-opticalsidebandsareobtainedattheoutputofthenotchfilter.Afrequencyelectricalsignalsbecomesattractive.millimeter-wavesignalthathasfourtimesthefrequencyoftheOpticalmicrowaveormillimeter-wavesignalgenerationismicrowavedrivesignalisgeneratedbybeatingthetwosecond-usuallybasedonhe

5、terodynetechniquesbybeatingtwoopticalorderopticalsidebandsataphotodetector.Sincenotunableop-carriersseparatedbythedesiredfrequencyinasquare-lawpho-ticalfilterisused,thesystemiseasytoimplement.AsystemusinganLiNbO3intensitymodulatorandafiberBragggratingfiltertodetector(PD).Iftheoffsetfreque

6、ncyofthetwoopticalcar-isbuilt.Astableandhighspectralpuritymillimeter-wavesignalriersisstableandtheirphasesarecorrelated,ahigh-qualityelec-tunablefrom32to50GHzisobtainedbytuningthemicrowavetricalsignalwillbegenerated.However,afterthetransmissiondrivesignalfrom8to12.5GHz.Theintegrityofth

7、egeneratedmil-ofthetwoopticalcarriersoveranSSMF,thegeneratedmi-limeter-wavesignalismaintainedaftertransmissionovera25-kmcrowaveormillimeter-wavesignalqualitywillbedeterioratedstandardsingle-modefiber.Theoreticalanalysisontheharmonicsuppressionwithdifferentmodulationdepthsandfilteratten

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