应用LPFG/EFPI集成式光纤传感器实现温度及应变的同时测量  

Simultaneous Measurement of Temperature and Strain Using an Integrated LPFG/EFPI Fiber-optic Sensor

作　　者：江建[1] 饶云江[1] 牛永昌[1] 王义平[1] 廖天奎[1] 

机构地区：[1]重庆大学光电工程学院,重庆400044

出　　处：《光子学报》2003年第9期1063-1066,共4页Acta Photonica Sinica

基　　金：国家杰出青年科学基金 (6 0 0 2 5 5 15 )资助项目

摘　　要：叙述了基于LPFG/EFPI的集成式光纤传感器的结构、温度和应变同时测量的原理及实验 ,首次制作了该传感器并测试了其性能 实验结果表明温度精度为± 0 .5℃ ,应变精度为± 2 0 με 。The structure,theory and operating principle of a novel sensor with a long period fiber grating (LPFG) and an extrinsic Fabry Perot interferometer (EFPI) arranged in series, used for simultaneous temperature and strain measurement, are described. An experiment is carried out to demonstrate the feasibility of the sensor. The experimental results show that a temperature accuracy of ±0.5 ℃ and a strain accuracy of ±20 με have been achieved, which can meet the requirements for practical applications.

关 键 词：LPFG/EFPI 集成式光纤传感器 结构 温度 应变 长周期光纤光栅 非本征型F-P干涉腔 测量 

分 类 号：TB942[一般工业技术—计量学] TP212.1[机械工程—测试计量技术及仪器]