物理学报2017，Vol.66Issue(7)：10-18,9.DOI:10.7498/aps.66.070702
啁啾相移光纤光栅分布式应变与应变点精确定位传感研究
Phase shift chirped fiber Bragg grating based distributed strain and position sensing
摘要
Abstract
A corresponding peak appears on the transmission spectrum,when the micro-strain is induced in a chirped fiber Bragg grating (CFBG).The center wavelength of the peak is sensitive to the location and magnitude of the strain,thus,the CFBG can be used in distributed strain and strain-points precise position sensing.The depth and center wavelength of the peak are determined by the magnitude and location of the strain.The cascaded CFBGs under different center wavelengths can realize the distributed strain and strain-point precise positioning.Considering the fact that the depth and center wavelength of the peak are related to the magnitude and location of strain,a theoretical model is established with Ⅴ-Ⅰ transmission matrix formalism.Theoretically,cascaded CFGBs can realize accurately the positioning of micron-scale.Experimentally,two CFBGs are cascaded and a sensitivity of 0.19 pm/με is obtained.The proposed precise position sensing can be applied to the fields of advanced manufacturing,precision machining,aerospace,railway-system,etc.关键词
精确定位传感/啁啾相移光纤光栅/应变Key words
precise position sensing/chirped phase shift fiber Bragg grating/strain引用本文复制引用
裴丽,吴良英,王建帅,李晶,宁提纲..啁啾相移光纤光栅分布式应变与应变点精确定位传感研究[J].物理学报,2017,66(7):10-18,9.基金项目
国家自然科学基金(批准号:61525501)资助的课题.Project supported by the National Natural Science Foundation of China (Grant No.61525501). （批准号:61525501）
