光子学报, 2009, 38 (4): 770, 网络出版: 2010-05-10
双三角形结构的光纤光栅压力和温度双参量传感器
A Fiber Grating Dual-parameter Sensor of Ditrigon Cantilever Beam for Measurement of Strain and Temperature
摘要
为解决压力和温度同时测量时的交叉敏感问题,提出一种基于双三角形悬臂梁结构的光纤光栅压力、温度双参量测量传感器. 在外界压力作用下,光纤布喇格光栅反射谱分裂成双峰结构,悬臂梁的应变调制传感光纤光栅双峰间距,温度变化转变成反射谱整体的移动. 实验结果表明该结构可实现单光栅双参量测量,且具有良好的线性和可重复性.
Abstract
To solve the problem of cross sensitization when the strain and the temperature are measured at the same time, a structure of a ditrigon cantilever beam of uniform strength was presented, in which the strain and the temperature can measured at the same time by a single fiber grating. The beam is bended and elongate the grating sticked on the surface of the beam.The reflectance spectrum from the grating was splitted into a double-peak spectrum with pressure.The of double peaks can be measured by strain.The strain can be measured by the space of the double peak. The variation of temperature was converted into the whole movement of the reflectance spectrum. The result show that the structure has linear and repetition ,which can be used to realize the measurements of sigle fiber and ditrigon parameters.
张锦龙, 余重秀, 王葵如, 李成. 双三角形结构的光纤光栅压力和温度双参量传感器[J]. 光子学报, 2009, 38(4): 770. ZHANG Jin-long, YU Chong-xiu, WANG Kui-ru, LI Cheng. A Fiber Grating Dual-parameter Sensor of Ditrigon Cantilever Beam for Measurement of Strain and Temperature[J]. ACTA PHOTONICA SINICA, 2009, 38(4): 770.