基于π相移光栅的温度传感特性研究  

Study on temperature sensing characteristics based on π-PSFBG

作　　者：侯美江 田晶 HOU Meijiang;TIAN Jing(Collage of Physics,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学物理学院,贵州贵阳550025

出　　处：《传感器与微系统》2020年第11期50-52,共3页Transducer and Microsystem Technologies

基　　金：贵州省科技计划资助项目(黔科基础[2019]1127)。

摘　　要：提出了一种简易的利用π相移光栅(π-PSFBG)实现温度测量的传感系统。系统利用了π相移光栅的窄带特征,可显著提高系统灵敏度,系统结构简单,易于操作。通过实验验证了该传感器的温度传感特性,结果显示:随着温度的升高,π-PSFBG的中心波长呈线性变化,线性拟合度R2为0. 999 5,温度灵敏度约为10. 2 pm/℃。A simple sensing system for temperature measurement using π phase-shift fiber Bragg grating( π-PSFBG) is proposed. The system utilizes the narrow bandwidth feature of the π phase-shift grating to significantly improve the system sensitivity,and structure of system is simple and easy to operate. The temperature sensing characteristics of the sensor is experimentally verified. The results show that the center wavelength of the π-PSFBG changes linearly with the increase of temperature,linear fitting R2 is 0. 999 5,and the temperature sensitivity is about 10. 2 pm/℃ .

关 键 词：π相移光栅 温度传感 光纤 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]