用单光纤布拉格光栅实现应力和温度同时测量  

Simultaneous Measurement of Strain and Temperature by Using a Single Bragg Grating

作　　者：王玉田[1] 王遂[1] 张玉艳[1] 王莉田[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《自动化与仪表》2001年第4期12-14,共3页Automation & Instrumentation

摘　　要：本文提出一种新型的基于光纤布拉格光栅的传感器 ,实现应力和温度同时测量。将一个布拉格光栅刻写在掺铒 /钇光纤上 ,利用掺铒 /钇光纤放大器的自发放大发射能与温度的线性关系来确定温度的变化 ,通过测量布拉格光栅波长的偏移来确定应力的数值。用法布里—珀罗可调谐滤光器接收信息 ,可实现应力和温度的分离。实验获得的应力和温度的测量范围分别为 0～ 1 4 0 0 με和 4 5～ 1 80℃。We proposed a novel sensor capable of simultaneous measurement of strain and temperature by using a single Bragg grating written in a erbium: ytterbium-doped fiber. By employing a linear variation in the amplified spontaneous emission power of the erbium: ytterbium-doped fiber amplifier with temperature, the temperature can be determined. By monitoring the Bragg wavelength shift, the strain can be determined. A Fabry-Perot tunable filter is used to obtain signal, which can discriminate strain and temperature. The experiments show the measurement ranges of 0~1400μεand 45~180℃ respectively.

关 键 词：光纤布拉格光栅 掺铒/钇光纤放大器 传感器 应力测量 测度测量 

分 类 号：TP274.5[自动化与计算机技术—检测技术与自动化装置] TP212[自动化与计算机技术—控制科学与工程]