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1、上海交通大學(xué)碩士學(xué)位論文光纖光柵傳感和調(diào)諧技術(shù)研究姓名：文瑜申請學(xué)位級別：碩士專業(yè)：電磁場與微波技術(shù)指導(dǎo)教師：陳建平20070101上海交通大學(xué)碩士論文的作用，還提高了光柵的波長調(diào)諧范圍，同時光柵的溫度靈敏度和應(yīng)變靈敏度也有很大的提高。2．由光纖Bragg光柵波長帶寬調(diào)諧原理出發(fā)，利用材料力學(xué)理論，得出了根據(jù)光纖Bragg光柵粘貼在簡支梁和圓環(huán)梁上位置的不同，可以實現(xiàn)無啁啾調(diào)諧和中心波長不變的啁啾帶寬線性調(diào)諧。與其他的調(diào)諧方法相比,使用圓環(huán)梁調(diào)諧的最大優(yōu)點是不需改變梁的受力方式,而只需轉(zhuǎn)動圓環(huán)梁即可分別實現(xiàn)無啁啾的中心波長
2、調(diào)諧和無中心波長偏移的啁啾帶寬調(diào)諧。基于這種圓環(huán)梁調(diào)諧結(jié)構(gòu)可以制作可調(diào)諧啁啾光纖光柵和溫度不敏感的光纖光柵位移傳感器。3．對輻射交聯(lián)聚乙烯封裝的光纖Bragg光柵傳感器，將其應(yīng)用到建筑工程實驗中的新吹填區(qū)樁基負(fù)摩擦性狀測量，進行應(yīng)變測量,并與裸光纖Bragg光柵傳感器以及傳統(tǒng)的電阻應(yīng)變片測量結(jié)果進行了對比。從而原理性地模擬分析了光纖Bragg光柵傳感器在實際工程中的應(yīng)用效果。關(guān)鍵詞：光纖Bragg光柵，應(yīng)變傳感，溫度傳感，增敏，波長調(diào)諧,帶寬調(diào)諧III上海交通大學(xué)碩士論文ResearchofFiberGratingSens
3、ingandTuningTechnologyAbstractWiththeimprovementoffiberBragggrating(FBG)fabricationtechnologyandincreasingapplications,fibergratingisoneofthemostpromisingandrepresentativepassiveopticalfiberdevices.SincethefirstFBGwaswrittenintoaGe-dopedfiberbythemethodofstanding-
4、wavein1978,sensorsbasedontheFBGreceivedmoreandmoreattentionfortheadvantagessuchasgoodreliability,interferencefreetoelectromagneticfields,lightinweight,anticorrosion,abilitytoworkinthemal-condition,high-reconverability,distributedsensingandsoon.Itwidensapplicationf
5、ieldoffibertechnologyinmanydifferentfieldsincludingcivilstructure,aerospacetechnology,shipandmarine,oilandchemicalindustry,electricandnuclearpowerindustry,andmedicine.Thedissertationiscomposedoftwoparts:thefirstpart(Chapter1to2)introducesthetheoryandimplementation
6、techniqueofFBG,asapreliminaryfoundationfortheoreticalandexperimentalstudyinwhatfollows.Thesecondpart(Chapter3to5)isthemainpartofthedissertation,whichincludesthefollowingcontents.1.Thecoreoffibergratingisthinandbrittle.ItpresentslowIV上海交通大學(xué)碩士論文shearingstrengthsotha
7、titmustbeencapsulatedinthepracticalapplications.Packagingtechniquesincludeprotectingpackagingandsensitivity-enhancingpackaging.BasedontheanalysisofstrainandtemperaturesensingpropertiesofFBG,radiationcrosslinkingpolyethylenematerialisemployedforpackagingtoenhancese
8、nsitivityofFBG.Relatedtechniqueisdeveloped.ItnotonlyprotectsFBG,butalsoenhancesthewavelengthtuningrangeandthesensitivityoftemperatureandstraingreatly.2.
