半導體激光器及其列陣光纖耦合模塊的研制.pdf

1、分類號UDC：，j級繃碼Y930923半導體激光器及其列陣光纖耦合模塊的研制DesignofFiberCoupledModuleofSemiconductorLaser矗ndIt’sArray學位授予單位及代碼：量盔些三墨堂I!!!!i!學科專業(yè)名稱及代碼：!墾望蘭壁!!業(yè)i!；!研究方向：主呈堡邀整盞型堡生墊盤申請學位級別：碩士指導教師：鲞劍至劐絲蕉研究生：塑叢苤答辯委員會主席：墊室塑塑蕉亟～論文開閱人：i』!自墊握整劍基型查邀論文起

2、止時間：20031l一2004I2AbstractThefa卜fieldpatternofhighpowerlaserdiode(LD)anditsarray(LDA)exhibitsareIativelvcloseresenlbIancetoGaussiansThecrossseclionofthebeamiseHip【ic北Thebeamdivergenceangle(FwHM)in凼edimensjonDerpendicularc

3、0I]eunction(fsIaxis)isabout3【)u～4(】”，butinthedimensjonparalleltoIheiunccjonaxisitis6”～12”SothebeaminfastaxisandinslowaxiscouIdnotbecolmnatedusingasimp【emicro。opticsHowever，inmOsIapplicalion，【oobtainhighqualiCybeam，itisne

4、cessarytocoupleLDorLDAwithfiberThusiljsanurgentandcomplextechnicalproblemInthispaper，difrcrcnfmeIhodsareLIscdlocoupletheoutputradialionofhighI)owerIaserdiodeandnsarrayin￡ofiber。Themaincontentsarefollowing：1WhencouDletheo

5、u中utradiationwhichfrom1mlOOmapenureofhighpower1aserdiodeinIoa50“mmullimodefiberbyusjngdoublecurvemicrolens，we疊et8(1％efficiency2WhencouplingtheaboveLDwjLhmulli—mOdefiber，ofwhichthecorediameteris2(j(J“m，thenumerica【apercur

6、e(NA)is022，andIherefractiveindexis161，wenotonlygethighcouplingefficjeneyof88％butalsoimitatetwithZEMAXsoftware，3Usingdoublecurvemicm—lensarray，wecoupletheou【pulradiacionfromlheLDAwhichwith】9emjtcer(everyapenureofwhichis1“

7、m100“mandwavelengchis8()8nm，)intoaLDAwhichwith19fibers，andobtaine腳ciencyof78％Moreover，wegel2x1o斗w／cm‘1i曲tpowerdensityand25woutputIi曲‘powerbyfocusingtheoutputli曲tfromfiberbundleintoasin2】e40【)Umfiber4WhencouplelheaboveLDA

8、jntofiberbundlebyusing120mfiberascolljmatinglens，wegeteti：ficiencyof78％5AtIhesaInetime，usingmicroopticssystem，wecoupletheabOveLDAintoasin證le400mmul“一modefiberwhichwithO22NAandobtaintheemciencvof64％KeyWord：laserdiode；Iase