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基于聚合物填充空心光纤的双腔法布里-珀罗干涉仪传感器用于同时测量温度和气压

Double-Cavity Fabry-Perot Interferometer Sensor Based on Polymer-Filled Hollow Core Fiber for Simultaneous Measurement of Temperature and Gas Pressure.

作者信息

Zhu Yixin, Zhang Yufeng, Tang Qianhao, Li Shengjie, Zheng Huaijin, Liang Dezhi, Xiao Haibing, Du Chenlin, Yu Yongqin, Ruan Shuangchen

机构信息

Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, China.

Physics Teaching and Experiment Center, Shenzhen Technology University, Shenzhen 518118, China.

出版信息

Sensors (Basel). 2025 Apr 10;25(8):2396. doi: 10.3390/s25082396.

DOI:10.3390/s25082396
PMID:40285086
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12031117/
Abstract

A double-cavity Fabry-Perot (F-P) interferometer sensor based on a polymer-filled hollow core fiber (HCF) has been proposed and experimentally verified. The double cavity of the sensor is formed by filling the hollow core fiber with two kinds of polymer materials and curing these materials, with the other end of the hollow core fiber connected to a single-mode fiber (SMF). The three reflective surfaces of the sensor reflect three beams of light, which interfere to form a spectrum with an envelope. By using Fast Fourier Transform (FFT) and a Fourier filter, the spectrum of each cavity can be separated and, based on this, the demodulation matrix of the sensor can be constructed. By controlling the length of the polymer cavity, a single sensor cavity can achieve high temperature and gas pressure sensitivity, with values of 2.05 nm/°C and 17.63 nm/MPa, respectively. More importantly, the sensor can be used under an environment of 40-110 °C and 0-3.0 MPa, with simple fabrication, good robustness, and better stability and repeatability compared to similar sensors. Based on its high sensitivity and large measurement range, this sensor has broad application prospects in industrial manufacturing and harsh environmental monitoring fields.

摘要

一种基于聚合物填充空心光纤（HCF）的双腔法布里-珀罗（F-P）干涉仪传感器已被提出并通过实验验证。该传感器的双腔是通过用两种聚合物材料填充空心光纤并固化这些材料形成的，空心光纤的另一端连接到单模光纤（SMF）。传感器的三个反射面反射三束光，它们相互干涉形成一个带有包络的光谱。通过使用快速傅里叶变换（FFT）和傅里叶滤波器，可以分离每个腔的光谱，并在此基础上构建传感器的解调矩阵。通过控制聚合物腔的长度，单个传感器腔可以实现高温和气体压力灵敏度，分别为2.05 nm/°C和17.63 nm/MPa。更重要的是，该传感器可以在40-110°C和0-3.0 MPa的环境下使用，与类似传感器相比，具有制作简单、鲁棒性好、稳定性和重复性更好的特点。基于其高灵敏度和大测量范围，该传感器在工业制造和恶劣环境监测领域具有广阔的应用前景。

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