斜入射窄帶濾光片偏振特性及其優(yōu)化設(shè)計(jì)研究.pdf

1、西南交通大學(xué)碩士學(xué)位論文斜入射窄帶濾光片偏振特性及其優(yōu)化設(shè)計(jì)研究姓名：王翀申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：羅斌20050401AbstractThin—filmnarrowbandfiltersareappliedtomanyfieldsWiththeadvancementofDWDM(densewavelengthdivisionmultiplexing)technologies，keypartsofDWDMappar

2、atushavebeengreatlydevelopedFabryPerotthinfilmfilters，regardedasmultiplex／demultiplexcomponents，havebeenusedextensivelyEfficientopticalthicknessofthinffimatnonnormalincidencewilldecreaseandcentralwavelengthwillshiftinsho

3、rtwavedirectionBasedoncharacteristicmatrixtheoryofthinfilmoptics，thispapergivessomecharacteristicsonmultilayerfiltersusedintiltedincidenceCharactersofSpolarizationandPpolarizationwillseparatewhenthefilterisintheincidence

4、atnonzeroangleOneisthecentralwavelengthsoftwopolarizationbeamsdonotcoincidewitheachotherTheotheristhatpassbandwidthofSpolarizationislessthanthatofPpolarizationAhgletunedfilter’Scentralwavelengthsoftwopolarizationbeamscan

5、coincidebyadjustingeffectiverefractiveindexofspacerBeginningwiththeanalysisofphaserelationshipandbyuseofthecharacteristicmatrixexpressionoffilms，thispaperdeducestwoimplicitfunctionexpressionscomprisingmoderaterefractivei

6、ndexofspacerandcentralwavelengthofPpolarization＆SpolarizationThereforethevaluesofmoderaterefractiveindexandcorrespondingcentralwavelengthcanbequicklyandaccuratelyobtainedSimilarlythispaperalsodeducestwofunctionexpression

7、scomprisingseveralkeyparametersbyUSeofcharacteristicmatrixexpressionoffilmsWheninitialstatusisknown，valuesoflowrefractiveindexandtheparametermaregiventhevaluesofhighrefractiveindexandmoderaterefractiveindexofdesignedfilt

8、erscanbeeasilyworkedoutUltimatelytheproblemoftwopolarizationbeams’charactersplittingintiltedincidencecanbewellresolvedbyuseofdesignedfiltersKeywordsNarrowbandfilters，Hltedincidence，Polarization，Centralwavelength，Passband