光纤光栅高温传感器的研究  

Study on High Temperature Optic Fiber Grating Sensor

作　　者：詹亚歌[1] 向世清[2] 何红[2] 朱汝德[2] 王向朝[2] 

机构地区：[1]东华大学理学院,上海200051 [2]中国科学院上海光学精密机械研究所信息光学实验室,上海201800

出　　处：《中国激光》2005年第9期1235-1238,共4页Chinese Journal of Lasers

基　　金：上海市科技委员会专项基金(011661081)资助项目

摘　　要：提出了一种能够测量高温的光纤布拉格光栅(FBG)传感器结构。利用线膨胀系数和长度均不同的两种金属细杆和光纤布拉格光栅设计而成的传感头,能够将被测温度转化为光栅的应变,解调由应变引起的光栅波长漂移,即可得知待测的温度。目前在实验室实现了500℃的动态范围和1℃的温度分辨率,实验结果与理论分析一致。A simply and low-cost fiber Bragg grating （FBG） high temperature sensor is introduced in this paper. The sensing head is comprised of one fiber Bragg grating and two metal strips with different length and different coefficients of thermal expansion （CTE）. The sensing head can transform the temperature to be measured into the strain of FBG. It can be known the temperature by interrogating the wavelength of the FBG that induced by the strain. A dynamic range of 500℃ and a resolution of 1℃ have been realized in experiments. The experiment results agree well with the theoretical analysis.

关 键 词：光纤光学 光纤传感器 光纤光栅 温度 

分 类 号：TN212.14[电子电信—物理电子学]