微波光子滤波器研究综述课件

1MPFResearch2023/1/162MainMethods

---IncoherentFamilyBasedonSBSEffectBasedonModulatedSingleLaserBasedonTLSArrayBasedonMutli-WavelengthFiberLaserBasedonSpectrally-SlicedBroadbandOpticalSourceOthersOurResearchInterestBasedonMulti-WavelengthFiberLaser2023/1/165Fig.1.(a)Experimentalconfigurationofthemultiwavelengthfiberlaser.FRM:Faradayrotatormirror.WDM:wavelengthdivisionmultiplexer.LD:pumplaserdiode.PC:polarizationcontroller.(b)Emissionspectrumofthelaserwhen

=4mm.(c)Wavelengthspacing(solidlines)andnumberoflaserlines(dashedlines)asafunctionof2023/1/166Fig.3.Transferfunctionofthefilterandthecorrespondinglaseremissionspectrumfor(a)and(b)

=1.95mm,and(c)and(d)

=1.61mm.Solidlinesareexperimentalresultsanddashedlinesaretheoreticalcalculations.2023/1/167几个关系式：Fig.4.(a)FSRasafunctionoftheinverseof△λ.Inset:centralfrequencyofthefirstthreebandsasafunctionofdistance.(b)3-dBbandwidthofthepassbandsasafunctionofdistance.2023/1/169主要仪器器件：PM:12GHZ美国EoSpaceVNA:40MHZ---40GHZ日本Anritsu37369C;PD:12GHZ美国Newfocus15442023/1/1610Fig.2.Opticalspectraof(a)theASEspectrumoftheringcavitywithouttheuseofwindowedFPfilterand(b)thelaseroutputversusthepumpcurrent.2023/1/1611Fig.3.Opticalandmicrowavespectrawhenthemulti-wavelengthlaserhad40lasingwavelengths.(a)Measuredmulti-wavelengthlaseroutput.(b)Measuredfilterresponse2023/1/16133、Amicrowavephotonicfilterusingaswitchablemultipledual-wavelengtherbium-dopedfiberlaser南洋理工大学：GNing,JQZhou,PShum,SAditya,VincentWong

andDesmondLimJ.Opt.A:PureAppl.Opt.10(2008)085304Figure1.Schematicoftheexperimentalsetup.HNDSFrepresentshighnonlineardispersionshiftfiber;PCrepresentspolarizationcontroller;EDFArepresentserbium-dopedfiberamplifier;PDrepresentsphotodetector;SMFrepresentssinglemodefiber.2023/1/16142023/1/1615Figure2.(a)Multipledual-wavelengthlaserwhentheoutputpowerofEDFAis20dBm.(b)Correspondingmeasuredmulti-tapfilter

responsewhentheoutputpowerofEDFAis20dBm.(c)Multipledual-wavelengthlaseraftertuningwhentheoutputpoweroftheEDFAis

20dBm.(d)CorrespondingmeasuredfilterresponseaftertuningwhentheoutputpowerofEDFAis20dBm.Figure3.(a)Multipledual-wavelengthlaserwhentheoutputpowerofEDFAis28dBm.(b)CorrespondingmeasuredfilterresponsewhentheoutputpoweroftheEDFAis28dBm.(c)Multipledual-wavelengthlaseraftertuningwhentheoutputpoweroftheEDFAis28dBm.(d)CorrespondingmeasuredfilterresponseaftertuningwhentheoutputpoweroftheEDFAis28dBm.Figure4.(a)Switchednormalmultiplewavelengthlaserspectrumwithaspanof60nm.(b)Correspondingmeasuredfilterresponseforresultantnormalmultiplewavelength.(c)Switchednormalmultiplewavelengthlaserspectrumaftertuningwithaspanof50nm.(d)Measuredfilterresponseaftertuningforresultantnormalmultiplewavelength.Fig.2.(a)Experimental(solidline)andsimulated(dashedline)filterresponseand(b)correspondingoutputspectrumoftheEDFLFig.3.Reconfigurationofthefilter.(a)Q-factoradjustment:Q≈9(solidline)andQ≈25(dashedline);(b)frequencytuning:f≈2.988GHz(solidline)andf≈2.638GHz(dashedline).Fig.1SchematicoftunablephotonicmicrowavefilterandtunableSFLincorporatingHiBiSagnacloopFig.2Microwavefilterresponseusing9.5kmSMFand33kmSMFfor△λ=3.2nm(topcurves)and△λ=1.6nm(bottomcurves)measuredresponses(solidlines)andFSRs;simulatedresponses(dashedlines)a9.5kmSMF；b33kmSMFFig.3TypicaloutputspectraofSFLfor△λ=3.2nm