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1、華僑大學(xué)碩士學(xué)位論文錐型塑料光纖的光傳輸特性及其應(yīng)用研究姓名：連重炎申請學(xué)位級別：碩士專業(yè)：光學(xué)指導(dǎo)教師：莊其仁20071201華僑大學(xué)碩士學(xué)位論文：錐型塑料光纖的光傳輸特性及其應(yīng)用研究實驗發(fā)現(xiàn)，錐形塑料光纖對于提高光束的耦合效率具有良好的效果。關(guān)鍵詞：塑料光纖；錐形光纖；光線追跡法；耦合效率；遠場特性IV華僑大學(xué)碩士學(xué)位論文：錐型塑料光纖的光傳輸特性及其應(yīng)用研究ABSTRACTTheplasticopticalfiber(POF)havemanyadvantageinshortdistancecommunication,suchasfineflexibility,easy-connect
2、ing,lowcostandsoon.Inthefieldofsensing,comparedwiththesilicaopticalfiber(SOF),thePOFshavehighersensitivityandbiggermeasurementrange.Sotheplasticopticalfiberisbeingpaidmoreandmoreattentionandithasthequiteconsiderablepotentialmarketandtheapplicationprospect.Thispaperstudiesonthetheoryofmodecouplinga
3、ndpowerflowequationofplasticopticalfiberwaveguide.Raytracingmethodofplasticopticalfiberissimplyintroducedandsimulated.Basedontheraytracingmethodofgeometricoptics,thepropagationpropertyofraysintaperedplasticfiberisanalyzedandsimulated.Themeridianrayandtheskewraypropagationformulafortaperedplasticfi
4、berisderived.Theresultshowsthatitisappropriatetouseasmallertaperanglewhenthetaperedplasticopticalfiberisusedascollimation.Theexperimentoflarge-coreplasticopticalfiberthermalpre-elongatedtaperisintroduced.Throughexperimentrepeatedly,thepaperproposedthegoodparameterofplasticopticalfiberthermalpre-el
5、ongatedtaper,andgavesometestandanalysisonthethermalpre-elongatedtaperedplasticopticalfiber.Thefar-fieldcharacteristicswhenLDgoesthroughtelescopesystem、multi-modefibersystemandtaperedplasticopticalfibersystemarestudied.Thetelescopesystemhasgoodbeamcollimation,andthefar-fieldbeamappearsringshapeford
6、iffraction.Multi-modefibersystemhasthecharacteristicofmodeldispersionwhichmakesthecomplexspatialcoherencelessandthelightbeamuniformityincreased.Withbothcharacteristics,taperedplasticopticalfibersystemmakesthelighthavepartialcoherenceandreducesthebeamdivergenceangle,whichmakesthelightqualitythebest
7、.Informationiscarriedbylightbeamfromlightsourcesinopticalfibercommunication.Themostcommonlightsourcesaresemiconductorlaserandlightemittingdiode.Inthelastchapter,theresearchoncouplingbetweenLEDV華僑大學(xué)碩士學(xué)位論文：錐型塑料光纖的光
