光通信技术2024，Vol.48Issue(1)：29-33,5.DOI:10.13921/j.cnki.issn1002-5561.2024.01.006
基于TFBG边缘滤波的FBG温度传感器
FBG temperature sensor based on edge filtering of TFBG
摘要
Abstract
In order to improve the temperature sensitivity of the system,a fiber Bragg grating(FBG)temperature sensor based on tilted fiber Bragg grating(TFBG)edge filter is designed.In this system,a fiber ring mirror is introduced into the conventional TF-BG edge filter demodulation system to reflect the transmitted light signal from TFBG back,so that it can pass through TFBG a-gain,increase the depth of TFBG transmission spectrum,and encapsulate the sensor grating.The experimental results show that the drift of the center wavelength of the sensor grating before and after packaging is 0.55 nm and 7 nm respectively,and the drift of the sensor grating after packaging is expanded by more than ten times.At the same time,because the slope of the demodulation transfer function of TFBG edge filter is improved,the temperature sensitivity of the sensor after wavelength demodulation is also improved,which is 1.6～2.4 times that of the uncascaded optical fiber ring mirror sensor.关键词
光纤传感技术/倾斜光纤光栅/边缘滤波/温度传感Key words
optical fiber sensing technology/tilted fiber Bragg grating/edge filter/temperature sensing分类
信息技术与安全科学引用本文复制引用
杨明聪,黄勇林,钱宇阳..基于TFBG边缘滤波的FBG温度传感器[J].光通信技术,2024,48(1):29-33,5.基金项目
江苏省光通信工程技术研究中心课题项目(ZXF201804)资助. （ZXF201804）
