摘要
本文首先介绍了光纤光栅应变和温度传感的原理，然后利用长周期光纤光栅和一般均匀周期光纤光栅对应变和温度响应的显著差异，将它们结合起来进行用于鉴别应变／温度的混合光纤光栅传感器的研究．实验装置采用两个 ＦＢＧ和一个ＬＰＢ相结合，发现该系统具有较高的测量精度，测量应变误差±９ μｍ，温度误差± １．５℃。
In this paper, the theory of strain/temperature sensor based on optic-fiber grating is presented first. Then we demonstrate a novel hybrid optic-fiber grating sensor system for strain/temperature discrimination, which uses the difference in strain and temperature response of fiber Bragg gratings and long-period grating. The experimental device requires two fiber Bragg gratings (FBGs) and one long-period grating (LPG), which has more accurate sensitivity. The sensitivity of strain and temperature are ± 9 με and ±1. 5 ℃ respectively.
出处
《传感技术学报》
CAS
CSCD
1999年第4期275-278,共4页
Chinese Journal of Sensors and Actuators
关键词
光纤光栅传感器
应变响应
温度响应
鉴别
fiber Bragg grating long-period grating optic-fiber sensor strain/temperature
