基于模间干涉原理的全光纤马赫-曾德尔温度传感器

吕卫卫; 徐峰; 俞本立

doi:doi:10.3788/lop51.050605

激光与光电子学进展, 2014, 51 (5): 050605, 网络出版: 2014-04-09

基于模间干涉原理的全光纤马赫-曾德尔温度传感器

All-Fiber Mach-Zehnder Temperature Sensor Based on Inter-Modal Interference

论文大纲

吕卫卫 ^*徐峰俞本立

作者单位

安徽大学物理与材料科学学院，安徽合肥 230601

光纤传感细芯光敏光纤纤芯错位温度测量 fiber sensor thin-core photo-sensitive fiber core-offset temperature measurement

摘要

根据模间干涉原理提出了一种基于细芯光敏光纤的全光纤马赫-曾德尔干涉仪(MZI)结构，并实验制作出纤芯错位的MZI。根据数值模拟对该模间干涉仪结构进行优化，获得了干涉仪的干涉谱消光比超过20 dB。通过对该传感器进行温度响应实验，分析并讨论了干涉长度及弯曲特性对其温度灵敏度的影响，最终获得的温度灵敏度达到116 pm/°C。

Abstract

An all-fiber Mach-Zehnder interferometer (MZI) temperature sensor based on the inter-modal interference principle is proposed and experimentally demonstrated. According to the simulation results of the MZI based on core-offset, we optimized the structural parameters of such an MZI sensor. The MZI sensor based on core-offset with the extinction ratio of more than 20 dB is obtained successfully. The performance of sensing temperature of such MZI sensors is tested. The influence of the interference length and bending structure of such MZI sensors on the temperature response are also investigated in detail. The temperature sensitivity is improved and reaches to 116 pm/°C.

参考文献

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吕卫卫, 徐峰, 俞本立. 基于模间干涉原理的全光纤马赫-曾德尔温度传感器[J]. 激光与光电子学进展, 2014, 51(5): 050605. Lü Weiwei, Xu Feng, Yu Benli. All-Fiber Mach-Zehnder Temperature Sensor Based on Inter-Modal Interference[J]. Laser & Optoelectronics Progress, 2014, 51(5): 050605.

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