基于FBG的探针式TFBG-SPR应变传感器  

FBG-based Probe-type TFBG-SPR Strain Sensor

作　　者：匡江平 王则力[3] 张勐 贾平岗 安国文 KUANG Jianping;WANG Zeli;ZHANG Meng;JIA Pinggang;AN Guowen(School of Semiconductor and Physics,North University of China,Shanxi,Taiyuan 030051,China;State Key Laboratory of dynamic testing technology,Shanxi,Taiyuan 030051,China;Beijing Institute of Structure and Environment Engineering,Beijing 100076,China)

机构地区：[1]中北大学仪器与电子学院,太原030051 [2]省部共建动态测试技术国家重点实验,太原030051 [3]北京强度环境研究所,北京100076

出　　处：《强度与环境》2024年第5期63-68,共6页Structure & Environment Engineering

基　　金：山西省科技创新人才团队专项(202204051001016);山西省重点研发计划(202102150101006);北京强度环境研究所联合创新基金(BQJJ202314)。

摘　　要：本文提出了一种基于FBG的探针式倾斜光纤光栅表面等离子体共振(TFBG-SPR)应变传感器,用于同时测量温度和应变。该传感器利用SPR损耗峰作为温度传感单元,并采用倾斜光栅纤芯模式作为应变传感单元。通过观测共振峰的偏移及纤芯模式波长的变化,实现了对应变和温度变化的监测。实验结果显示,该传感器的温度灵敏度可达到-251.3pm/℃,应变灵敏度为1.3pm/με。该传感器具有高精度、良好的稳定性以及弱交叉敏感性,能够在多种场景中得到广泛应用。In this paper,a FBG-based probe-type tilted fiber grating surface plasmon resonance(TFBG-SPR)strain sensor is proposed for simultaneous measurement of temperature and strain.The sensor utilizes the SPR loss peak as the strain sensing element and employs the tilted grating core mode as the temperature sensing element.By observing the shift of the resonance peak and the changes in the core mode wavelength,the sensor can monitor variations in strain and temperature.The experimental results show that the temperature sensitivity of the sensor can reach-251.3 pm/℃,the strain sensitivity is 1.3 pm/με.The sensor exhibits high precision,good stability,and low cross-sensitivity,making it suitable for a wide range of applications.

关 键 词：光纤倾斜光栅 表面等离子体共振效应 应变传感 温度传感 

分 类 号：TN25[电子电信—物理电子学]