Low-noise and highly stable optical fiber temperature sensor using modified pulse-reference-based compensation technique  

作　　者：卞强 宋章启 宋东雨 张学亮 李炳生 孟洲 于洋 

机构地区：[1]College of Meteorology and Oceanology, National University of Defense Technology, Changsha 410073, China [2]College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China [3]Department of Physics, School of Science, Harbin Institute of Technology, Harbin 150080, China

出　　处：《Chinese Optics Letters》2018年第7期19-22,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11574397,61775238,61705262,and 61705263);the Scientific Research Project of National University of Defense Technology(No.JC15-11-02)

摘　　要：We modify the pulse-reference-based compensation technique and propose a low-noise and highly stable optical fiber temperature sensor based on a zinc telluride film-coated fiber tip. The system noise is measured to be 0.0005 dB, which makes it possible for the detection of the minor reflectivity change of the film at different temperatures. The temperature sensitivity is 0.0034 d B/℃, so the resolution can achieve 0.2℃. The maximum difference of the temperature output values of the sensor at 20℃ at different points in time is 0.39℃. The low cost, ultra-small size, high stability, and good repeatability of the sensor make it a promising temperature sensing device for practical application.We modify the pulse-reference-based compensation technique and propose a low-noise and highly stable optical fiber temperature sensor based on a zinc telluride film-coated fiber tip. The system noise is measured to be 0.0005 dB, which makes it possible for the detection of the minor reflectivity change of the film at different temperatures. The temperature sensitivity is 0.0034 d B/℃, so the resolution can achieve 0.2℃. The maximum difference of the temperature output values of the sensor at 20℃ at different points in time is 0.39℃. The low cost, ultra-small size, high stability, and good repeatability of the sensor make it a promising temperature sensing device for practical application.

关 键 词：Low-noise and highly stable optical fiber temperature sensor using modified pulse-reference-based compensation technique 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]