基于光纤受激布里渊散射的慢光研究

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1、北京交通大学硕士学位论文基于光纤受激布里渊散射的慢光研究姓名：孙中亮申请学位级别：硕士专业：光纤通信与移动通信指导教师：王目光20080601ABSTRACTABSTRACT：Thetheoryonslowlighthasbeenstudiedformanyyears．Withsomeexperimentresultsinrecentyears，considerableinteresthasbeenattractedtothefield．Ontheonehand，thephenomenonexistinvitingapplicationprosp

2、ect，ontheotherhand，thatinvolvesignificantbasistheory．Thestudywillnotonlydeepen0111"understandingtotheessenceoflightinteractingwitllmatter,butalsocanbeusedforopticalswitching,opticalstorageandslowlightandSOon．Earlyslowlightresearchusuallyhasusedelectromagneticallyinducedtransp

3、arency(EIT)orcoherentpopulationoscillations(COP)．Butthesetwomethodsneedtouseexpensiveexperimentinstrumentsandberealizedonlyinsomespecialgasorcrystalforcertainwavelength．Soitisdifficultinpractice．Toovercomethesedisadvantagesandmakethestudyonslowlightbecomemorepractical，slowlig

4、htc觚beachievedbyuseofnonlinear-effectsORfiberinthisarticle．AndmainlytheprocessofslowlightviastimulatedBrillouinscattering(SBS)isanalyzed．Theprimaryachievementsareasfollows：1Thelatestdevelopmentsandsignificanceofresearchoncontrollableslowlightarereviewed．Advantagesanddisadvant

5、agesofthesekindsoftechnologiesarediscussed．ThephysicalprincipleofslowlightandmethodsofachievingslowlightviastimulatedBrillouinscatteringinopticalfibersarestudied．2SteadystateofSBSisanalyzedbyshootingmethodandRunge-Kuttamethodonthebasisofcouplingequations．Andtheprocesstoachiev

6、eslowlightundersteadystateisdiscussed．TheSBSthresholdchangedalongwiththelossoffiber．Theeffectofpumpwavepowerandthelengthoffiberandstokeswavepoweronslowlightwereanalyzed．3Shootingmethod，Runge-Kuttamethodandsplit—stepFouriermethodareusedinMtalabsimulationonthebasisofthenumerica

7、lstudyinthissubject．TheeffectofBrillouingain011opticaltimedelayisdiscussed。Mainlytheeffectofgainsaturationonslowlightisanalyzedandtheeffectofdispersiononthewaveformofoutputpulseisdiscussedwitllpulsetimedelay．4ThecharacteristicofspontaneousBrillouinscatteringisstudied．Thefrequ

8、encyspectrumofspontaneousBrillouinscatteringisanalyzed．Andtheexperim