一种基于马赫-曾德尔干涉仪的折射率和温度同时测量传感器  

A sensor for measuring refractive index and temperature simultaneously based on Mach-Zehnder interferometer

作　　者：刘婷 张静[1,2,3] 李永倩[1,2,3] 武佳琪[1,2,3] 张雨微 赵旭[1,2,3] LIU Ting;ZHANG Jing;LI Yongqian;WU Jiaqi;ZHANG Yuwei;ZHAO Xu(Department of Electronic and Communication Engineering,North China Electric Power University,Baoding,Hebei 071003,China;Hebei Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding,Hebei 071003,China;Baoding Key Laboratory of Optical Fiber Sensing and Optical Communication Technology,North China Electric Power University,Baoding,Hebei 071003,China)

机构地区：[1]华北电力大学电子与通信工程系,河北保定071003 [2]华北电力大学河北省电力物联网技术重点实验室,河北保定071003 [3]华北电力大学保定市光纤传感与光通信技术重点实验室,河北保定071003

出　　处：《光电子．激光》2023年第8期785-791,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61775057,62171185,52177141);河北省自然科学基金(F2019502112);中央高校基本科研业务费专项基金(2019MS086,2021MS071)资助项目。

摘　　要：设计制作了一种基于马赫-曾德干涉结构的传感器用于折射率和温度的同时测量,传感器的结构为单模-多模-细芯-多模-单模。利用RSoft光学仿真软件的BeamPROP模块对传感结构内部光场进行模拟分析,确定了多模光纤(multi-mode fiber,MMF)及细芯光纤(thin core fiber,TCF)的最优长度,制作了传感结构并搭建实验系统观测其折射率和温度响应情况,结合敏感矩阵,实现了双参量的同时测量。实验结果表明,该传感器在1.333—1.380的折射率范围内灵敏度为-44.944 nm/RIU,在30—65℃的温度范围内灵敏度为0.0829 nm/℃。本文提出的传感器结构简单、体积小、灵敏度高,可以为折射率和温度双参量传感设计提供参考。A sensor based on Mach-Zehnder interference structure is designed to measure refractive index and temperature simultaneously.The sensor structure is single mode-multi-mode-thin core-multi-mode-single mode.BeamPROP module of RSoft optical simulation software was used to simulate and analyze the optical field inside the sensor structure.The optimal length of the multi-mode fiber(MMF)and the thin core fiber(TCF)was determined.The sensor structure was made and the experimental system was set up to observe the refractive index and temperature response.Dual-parameter measuring simultaneously was realized combined with sensitivity matrix.The experimental results show that the sensitivity of the sensor is-44.944 nm/RIU in the refractive index range of 1.333—1.380 and 0.0829 nm/℃in the temperature range of 30—65℃.The proposed sensor has the advantages of simple structure,small volume and high sensitivity,which can provide reference for the design of dual-parameter sensor of refractive index and temperature.

关 键 词：光纤传感器 马赫-曾德尔干涉仪(MZI) 折射率 温度 

分 类 号：TN253[电子电信—物理电子学]