预览加载中，请您耐心等待几秒...

应变和温度同时测量的结合.doc

预览
1/9
2/9
3/9
4/9
5/9
6/9
7/9
8/9
9/9

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

通信英语大作业 英文原文 SimultaneousMeasurementofStrainandTemperatureIncorporatingaLong-PeriodFiberGratingInscribedonaPolarization-MaintainingFiberAbstract—Simultaneousmeasurementofstrainandtemperaturewasdemonstratedbyusingalong-periodfibergratinginscribedonapolarization-maintainingfiber(PM-LPG).ThespectralsensitivitiesofthetwoadjacentresonantdipsofthePM-LPGweremeasuredwithrespecttostrainandtemperature.Thesensitivitiesofeachresonantdipforstrainandtemperatureweredifferentinmagnitudeandsign,whichmakesthisPM-LPGhaveacapabilityofsimultaneouslysensingstrainandtemperature.Experimentalresultsshowrootmeansquaredeviationsof15.6and0.7Cforstrainandtemperature,respectively.IndexTerms—Long-periodfibergrating(LPG),opticalfibersensor,polarization-maintainingfiber(PMF),strain,temperature.I.INTRODUCTIONFIBERGRATINGsensorshaveyieldedgreatattentionduetotheirsignificantadvantagessuchaswavelengthdomainresponse,electromagneticnoiseimmunity,highsensitivity,compactness,simplicityoffabrication,etc.Theyhavebeenusedforhealthmonitoringandspatialanalysisofengineeringstructures.Oneofthemostsignificantlimitationsoffibergratingsensorsistheirdualsensitivitytostrainandtemperature.Therefore,agreatmanyeffortshavebeenmadetodiscriminatethewavelengthshiftproducedbystrainfromthatproducedbytemperature[1]–[4],amongwhicharethetwofiberBragggratings(FBGs)embeddedinaglasstube[3]andasingleFBGwritteninanerbium:ytterbium-dopedfiber[4].Recently,Chenetal.[5]reportedthattheFBGwrittenonahighbirefringencefibercanbeincorporatedforthesimultaneousmeasurementofstrainandtemperature.TheysimultaneouslymeasuredstrainandtemperaturebymeasuringwavelengthshiftsoftwoBraggwavelengthsintheFBGwhichhavedifferentresponsestostrainandtemperaturewithrespecttothetwoprincipalinputpolarizationsalignedalongthefastandslowaxesofthefiber.ButthedifferencesbetweeneachresponseoftheFBGtostrainandtemperatureateachBraggwavelengthwerenotsolarge,whichmightrestricttheaccuracyofthesensor.Inthisletter,wedemonstratesimultaneousmeasurementofthestrainandt