A tension insensitive PbS fiber temperature sensor based on Sagnac interferometer  

作　　者：付兴虎 张江鹏 杨凯丽 董艳华 文建湘 付广伟 毕卫红 

机构地区：[1]The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province,School of Information Science and Engineering,Yanshan University [2]Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University

出　　处：《Optoelectronics Letters》2017年第2期135-137,共3页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61675176,61575170 and 61475133);the Research Program of Hebei Province(Nos.16961701D and F2015203270);the Graduate Innovation Project(Nos.2015XJSS031 and 2015XJSS028);the "XinRuiGongCheng" Talent Project of Yanshan University

摘　　要：In this paper, a tension insensitive Pb S fiber temperature sensor based on Sagnac interferometer is proposed and demonstrated. The sensing mechanism of tension and temperature is analyzed. The relationships between the interference spectrum, temperature and tension are analyzed, respectively. The experimental temperature range is 36—70 °C. The experimental results show that the interference spectrum is red shifted, and its sensitivity is 53.89 pm/°C. In tension experiment, the tension range is 0—1 400 με. The experimental results show that there is no wavelength shift in the interference spectrum. The sensor is immune to tension cross-sensitivity compared with other sensors. It can be used for temperature testing in aerospace, chemistry and pharmacy.

关 键 词：interferometer insensitive pharmacy aerospace shifted temper schematic Bragg grating coupler 

分 类 号：TH744.3[机械工程—光学工程] TP212[机械工程—仪器科学与技术]