光折變波導(dǎo)陣列的結(jié)構(gòu)光寫(xiě)入方法研究.pdf

1、西北工業(yè)大學(xué)碩士學(xué)位論文光折變波導(dǎo)陣列的結(jié)構(gòu)光寫(xiě)入方法研究姓名：張鵬申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：光學(xué)工程指導(dǎo)教師：趙建林20040301西北工業(yè)大學(xué)碩士學(xué)位論文IIStructure1ightinducedphotorefractivewaveguidearraysAbstractAtthebeginningofanewmillenniumhumanityentersintoamultimedjaintemetagewithinformat

2、ion(egdatasound，andvideos)transmittedatahighspeedAsthebasisoftheinternetthemicroprocessorspeedandtheanaountofavallablebandwidthincreaseasMoore’sLawthetraditionalfabricationtechniquesofthekeyphotonicsandelectronicscompone

3、ntsfaceacriticalchallengeCurrentlythereexistsnolOWCOstintegratedopticalcomponentincommercialsystemsRecentlylightinducedopticalwaveguideformationattractsmuchresearchinterestasarecognizedtechnologyfordirect，rapid，andcostef

4、fectivefabricatingofvariousintegratedopticalwaveguidesThisdissertationmainlyinvestigateswritingvariouswaveguidestructuresinphotorefractive(P鼬crystalsbystructurelightirradiationmethodThemaincontentsofthisdissertationareas

5、follows：①AccordingtothesetofequationsgoverningthePRprocessindexchangesinPRcrystalsinducedbywritingbeamswithdifferentintensityprofilesaretheoreticallyanalyzedandnumericallysimulated②Theindexchangesinducedbycw1aseratmilliw

6、attinLiNb03：FecrystalsarestudiedexperimentallyindetailFurthermoretheexperimentaJresultsaretheoreticallyanalyzedandnumericallysimulatedTheresultsshowthatwaveguidestructuresCallbeeffectivelyinducedemployingstructurelightir

7、radiationinL仆m01：Fecrystals③FabricationmethodsofplanarYbranches，andchannelwaveguidesemployingstructurelightsformedbycylindricallensesandopticalbinarymasksareinvestigatedexperimentallyindetailAndanovelapproachtoprepareopt

8、icalmasksbyusingspatiallightmodulatorforlightinducedvariouswaveguides，evenawholecireuitsisproposed④FabricatingplanarandchannelwaveguidearraysinSBN：Cr’LiNbOs：FeandKNSBN：Cecrystalsunderilluminationsoftwo—beKinandfourbeamin

9、terferogramsaledetailedlyinvestigatedboththeoreticallyandexperimentallyMoreoveranovelapproachtofabricatearrayofthreedimensionalwaveguidesinPRcrystalsemployingilluminationsofapairofmutuallycoherentorincoherenttwobeaminter

10、ferencefieldsisproposedEmployingwritingbeamswithappropriateintensitydistributionsandexternalelectricfieldsalongproperdirections，arraysofplanarandchannelwaveguidescanbefabricatedinvariousPRcrystals@BasedonMathZeimderinter

11、ferometersetunsliceinterferometryformeasuringlightinducedindexchangesinPRcrystalisinvesfigatedAndemployingdigitalholographyforvisualizationsoftheindexchangesinPRcrystalisfirstproposedAdditionallythetwoapproachesareusedfo

12、rmeasuringtheindexdistributionsoflightinducedwaveguidessuccessfullyv2IriOUSopticalwaveguidesandwaveguidearrayscanbefabricatedbyirradiationsofdifferentstructurelightsThistechniqueisveryconvenience，andcombineswiththeelectr

13、ical／thermalfixingandoptical／thermalerasingtechniquesbothpermanentandinstantaneouswaveguidescanbeobtainedStructurelightinducedwavegaidedevicesinPRcrystalsc姐beusedforthecurrentopticalcommunicationsystems，andmaybeusedforop

14、ticaldynamicinterconnectionandopticalneuraInetworksystemsKeywords：photorefractivecrystal，lightinducedindexchanges，photorefractivewaveguide，structurelightirradiationmethod，waveguidearray’SupposedbytheNationalNatureScience