TIR光子晶體光纖及其色散特性的研究.pdf

1、南京郵電學院碩士學位論文TIR光子晶體光纖及其色散特性的研究姓名：劉國新申請學位級別：碩士專業(yè)：光學工程指導教師：蔡祥寶20050401南京郵電學院碩士學位論文ABSTRACTABSTRACTThefibercommunicationhasbeendevelopedforabout30yearssinceitfirstlycameoutin1970sForthelast3decades，theappearanceanddevelopme

2、ntofthetechnologyofthefibercommunicationhavedonegreatchangestothecommunicationfieldWiththedevelopmentandmaturationoftheDWDMsystems，opticalfibercommunicationnetworksaregoingtobesuperhighspeednetworkswithsuperhugecapacityw

3、hichareevolvingtoall—opticalnetworksstepbystepAsthetransmissionmedium，peopledomuchaRentiontoopticalfiberButtraditionalopticalfibersarelimitedbylosses，dispersionandnonlinearityessentiallySopeoplearecarryingondeepinvestiga

4、tiontofiberconstantlytodevelopthenewfibersthathavemoreexcellentperformancethantraditionalopticalfibersThetotalinternalreflectionphotonicfiber(TIRPCF)whichwewillmainlydiscussedinthispaperisoneofthenewfibersFromthesection，

5、TIRPCFhasuniquestructurewithaperiodicalsurroundingairholeanditscoreismadeofsilicainsteadofairThoughthelightguidemechanismofTIRPCFisthesaineastraditionalopticalfibers’，itrepresentslotsofmoreremarkablepropertiesthantraditi

6、onalfiberinfiberlosses，dispersionandnonlineareffectSo，inrecentyears，peoplearepayingmoreandmoreattentiontoTIR—PCFTheallwillbediscussedandanalyzedinthispaperDuetoitscomplexgeometryweshouldchoosethepropernumericalmethodwhen

7、wesimulateitsmodepropertieswithMatlabWechoosethefinitedifferencetime—domainmethod(FDTD)becauseofitssomevirtuesTheequivalent—refractiveindexmodelisbasedonthefundamentalspacefillingmode(FSM)，thephotoniccrystalcladdingiscon

8、sideredasauniformmedium，thenTIR—PCFisconsideredasastep—indexfiberThemodecharacteristicsofTIRPCFwhoseairholediameterisconstantthatareinvestigatedindetailusingtheequivalentrefractiveindexmodelAtlastwe’11discussaspecialTIR—

9、PCF、vitllwhichbothultralowdispersionandultraflatteneddispersionwillhaveagreatimpactonmanyengineeringapplicationsKeyWordsTotalInternalReflectionPhotonicFiber(TIRPCF)，Mode—guide，DispersionProperties，F(xiàn)initeDifferenceTimeDom