摘要
本文提出了一种调频连续波激光干涉非本征型法珀腔光纤温度传感器。使用具有较高热膨胀系数的不锈钢圆管封装法珀腔制成温度传感探头。不锈钢圆管作为法珀腔腔体的同时也是温度敏感元件。通过调频连续波干涉测量技术测量法珀腔因受热膨胀所产生的腔长变化量,实现对温度的传感。实验结果表明,该光纤温度传感器测温分辨率达到了0.0002℃,温度测量灵敏度可达3022 nm/℃。此温度传感器不仅具有较高的灵敏度与分辨率,且结构简单稳定,具有良好的应用前景。
This paper presents an extrinsic Fabry-Perot(F-P) cavity optical fiber temperature sensor, which is based on the frequency-modulated continuous-wave laser interference. The temperature sensing probe is fabricated by a stainless-steel tube with high coefficient of thermal expansion to encapsulate the F-P cavity. Stainless steel tube is used as the F-P cavity and also the temperature sensitive component. The variation of cavity length caused by thermal expansion of F-P cavity is measured by frequency-modulated continuous-wave interferometric measurement technique. The experimental results show that the temperature measurement resolution of the fiber temperature sensor reached 0.0002 ℃ and the temperature measurement sensitivity reached 3022 nm/℃. The temperature sensor not only has high sensitivity and resolution, but also has a simple and stable structure and a good application prospect.
作者
王欢
郑刚
陈海滨
张雄星
Wang Huan;Zheng Gang;Chen Haibin;Zhang Xiongxing(College of Optoelectronic Engineering, Xi'an Technological University, Xi’an, Shaanxi 710072,China)
出处
《光电工程》
CAS
CSCD
北大核心
2019年第5期84-90,共7页
Opto-Electronic Engineering
基金
陕西省光电测试与仪器技术重点实验室开放基金资助项目(2015SZSJ-60-3)~~
关键词
光纤传感器
法布里-珀罗干涉仪
调频连续波干涉
温度传感器探头
optical fiber sensor
Fabry-Perot interferometer
frequency-modulated continuous wave interference
temperature sensor probe