EFPI-FBG hybrid sensor for simultaneous measurement of high temperature and large strain

被引：0
|
作者：
熊丽 [1 ,2 ,3 ]
张东生 [1 ,3 ]
李立彤 [1 ,3 ]
郭永兴 [4 ]
机构：
[1] National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology
[2] School of Mechanical and Electronic Engineering, Wuhan University of Technology
[3] Key Laboratory of Fiber Optic Sensing Technology and Information Processing, Ministry of Education, Wuhan University of Technology
[4] School of Machinery and Automation, Wuhan University of Science and Technology
来源：
Chinese Optics Letters | 2014年 / 12卷 / 12期
关键词：
FBG; FP; EFPI-FBG hybrid sensor for simultaneous measurement of high temperature and large strain; high;
D O I：
暂无
中图分类号：
TP212 [发送器（变换器）、传感器];
学科分类号：
080202 ;
摘要：
We report an extrinsic Fabry–Perot interferometer-fiber Bragg grating(EFPI-FBG) hybrid sensor in this letter. The interferometric cavity of the proposed hybrid sensor is composed of a glass capillary tube, a section of single-mode fiber, and a section of single-mode metal fiber with one FBG. The FBG processed by high-temperature annealing is used to measure temperature, whereas the fiber EFPI is adopted for strain measurement. One of the two aligned fibers is free along the axial direction, which is different from the traditional structure that both the fibers are fixed to glass capillary tube. Experimental results show that the sensor can measure high temperature and large strain simultaneously. The measuring range of temperature and strain for the hybrid sensor is up to 500 °C and 10,000 με, respectively. Effective temperature compensation of the hybrid sensor is realized, too.
引用
收藏
页码：34 / 38
页数：5
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