A hybrid FP-FBG fibre sensor for simultaneous strain and temperature measurement

被引：0
|
作者：
He Wei [1 ,2 ]
Zhao Jiaqi [1 ]
Zhu Lianqing [1 ,2 ]
Zhang Wen [1 ,2 ]
Dong Mingli [1 ]
Liu Feng [1 ]
机构：
[1] Beijing Informat Sci & Technol Univ, Key Lab, Minist Educ Optoelect Measurement Technol & Instr, Beijing 100192, Peoples R China
[2] Beijing Informat Sci & Technol Univ, Beijing Lab Opt Fiber Sensing & Syst, Beijing 100016, Peoples R China
来源：
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS | 2019年 / 13卷 / 9-10期
基金：
中国国家自然科学基金;
关键词：
Fabry-Perot; FBG; Chemical etching; Temperature; Strain; Dual-parameter; DUAL-PARAMETER SENSOR; LASER;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A hybrid optical fibre sensor composed of a fibre Bragg grating (FBG) and Fabry-Perot (FP) cavity fabricated by chemical etching was proposed for dual-parameter measurement. The temperature characteristics were measured over the range 30100 degrees C. The spectrum of the FP cavity did not shift with temperature, but the sensitivity of the FBG was 9.5 pm/degrees C (linearity, 0.9994). The sensor showed excellent repeatability. Its strain behaviour was examined in the range 0-550 mu epsilon. For the FP cavity, the loading and unloading strain sensitivities were 2.8 and 3pm/mu epsilon, respectively (linearity > 0.9539); for the FBG, these values were both 1.3 pm/mu epsilon (linearity > 0.9994).
引用
收藏
页码：495 / 501
页数：7
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