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1、北京交通大學(xué)碩士學(xué)位論文單模單偏振微結(jié)構(gòu)光纖的研究姓名：周志華申請學(xué)位級別：碩士專業(yè)：電磁場與微波技術(shù)指導(dǎo)教師：王智20060301ABSTRACTSin91epolarizationsinglemodefibers(SPSM)haVebeenpaida札entionsnotonlyintlleteleco伽nullicatiollS，butalsoindesignandfabricationoft11eoptical丘bersensorsa11d矗berlasers．TheconVentionalp01arization—maintaining(PM)fibershave
2、beenemployedfortheseapplications，butfibersaremoredesimble．Microstructuredopticalfibers(MOF)、vitllSpecialdesignedsnllctureshavemanyparticularcharacteristics．LightcaIlbepmgataedinsuchanMOF，andsomenovelphotonicdevicescanalsobeimplementedbyllsinghighbire銜ngentMOFs，extremelyloworhighnonlinearMO
3、Fs，etc．．Int11isdissertation，weconcentrateonanalyzingthepropertiesofSPSMfibers．sPsM訕erpeIInitsonlyonepolarizationmodetrarIsmittinginit．sPSMcaIlberealizcdwhenthehi曲eroneofthe‰damentalmodepaifinahighbire廳ingemfiberiscutof￡ECAHFisonekindofmicrostructuredoptical矗berwi也anellipticalce施alairholcan
4、dadepressedinnercladding，whichrefiacdonindexislowermanmeoutercladding，itisanovelSPSMfiberwithsomeexccllempropenies．Theellip廿calcemralairholeis血ekeycomponemofsuchsinglepol撕zationsin百emodeECAHF．AfewkiIldsofhighbire銜ngentfibers，a11dmemodalbirefringenceofthe矗md鋤entalmodes(usuallyoVer10-j)aredi
5、scussed．somepropeniesoftheSPSMECAHF，suchasmesinglemodeoper“on，themodalbirefringenceoftllefhd鋤emalmode，t}leballd州dmofSPSM，areinvestigatedindetailbynumericalcomputations．T訂odalbirefringenceofthe脅d鋤entalmodeinmeSPSMECAHFcaIl印proachto4×10一，WhichisoVeroneorderofmagmtude王ligherⅡlanthatintheconve
6、ntionalellipticaI—corcPMF．TheSPSMbandwidthofsuchECAHFisnmchgreaterthansomeconventionalPMfibers．Thelong-periodgratings(LPG)inscribedinMOFsarediscussedinthisthesis，includingthetrallsmissionpropeniesofmeLPGandthedependenceonthefiberstnlcturepammetcrS．SomeapplicationsoftlleSPSMfibersareshownmm
7、elastsection，especiallyinsOmepolarization-sensitivedevices，suchaSthefiberg”oandDolarizationcomroller．Keyword：Sin出ep01arizationsinglemode，micmstmctureopticalfiber，photoniccrystal矗ber，m曲biremn謄mce，optical矗bersensing北京交通大學(xué)碩上學(xué)位論立第一章緒論近年來，對于單模單偏振光纖(sPsM)的研究越來越多。由于單
