A軸向生長高雙折射單晶光纖光柵的特性及應(yīng)用研究.pdf

1、哈爾濱工業(yè)大學(xué)碩士學(xué)位論文A軸向生長高雙折射單晶光纖光柵的特性及應(yīng)用研究姓名：王楠申請學(xué)位級別：碩士專業(yè)：光學(xué)指導(dǎo)教師：周忠祥20050601哈爾濱工業(yè)大學(xué)工學(xué)碩士學(xué)位論文AbstractInrecentyears，theresearchandexploitationoffibergratingtechniquedevelopedmanyhighperformancedevices，whicharebasedonfibergrating

2、Thesedeviceswillmakehighspeedopticscommunications，DWDMsystem，fibersensing，opticalinformationprocessing，etc，tobechangedrevolutionarilyItisneededtolucubrateandempolderfibergratingtechniqueanditsapplicationFirst，wededucedth

3、ecouplingcharacteristicsbetweenforwardmodeandbackwardmode，transmissivityTandreflectivityRinsinglecrystalHighBirefringencefiberBragggratingAndthen，MarlabwasusedtonumericallycalculatetherefractiveindexofHighbirefringencesi

4、nglecrystalfiberandopticalfielddistributionFinallytherelationshipbetweenthereflectivityRandtheincidencewavelength^，thegratingperiod彳，gratingmodulationdepthAriel，thegratinglength工inAaxisHighBirefringencesinglecrystalfiber

5、BragggratingisanalyzedtheoreticallyusingMatlabThestudyshowedthatthereflectcenterwavelength如changedwiththechangeoftheeffectiverefractiveindexNandgratingperiodA，andthefilterrangeincreasedwiththeincreasingofgratingperiodATh

6、ebiggerthevalueofthegratingmodulatedepthAne^thewiderthefilterrangeForthereflectivityR，therearesomelibrationswiththeeffectiverefractiveindexⅣHoweverforthesinglemodethelibrationiSweakerthanthemultimode’SForthemultimode，the

7、reflectivitypeakvalueisn’tonly1buttheNandACanbemodulatetealizetherefleetivitypeakvaluereachinglorbeingcloseto1Thefilterrangeisnarrowerthanthesinglemode’SForthespecificallyreflectioncharacteristicandfilteringcharacteristi

8、cwhichcanreflectspecificlight(extraordinarylightorordinarylight)，AaxishighbirefringencesinglecrystalfiberBragggratingCanbeusedinbeamfilterspliterandcanbeappliedinintegratedopticdevice，whichhaswideforegroundKeyword：A—axis