基于M-Z干涉仪的光纤法-珀传感器解调方法  

Demodulation Method of Fiber Fabry-Perot Sensor Based on Mach-Zehnder Interferometer

作　　者：刘浩[1,2] 刘佳[1,2] 任乾钰 贾平岗[1,2] LIU Hao;LIU Jia;REN Qianyu;JIA Pinggang(Key Laboratory of Instrumentation Science and Dynamic Measurement Ministry of Education, North University of China, Taiyuan 030051,China;Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051 [2]中北大学电子测试技术重点实验室,山西太原030051

出　　处：《压电与声光》2021年第4期484-489,共6页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(51935011、52075505);山西省“1331项目”重点学科基金资助项目。

摘　　要：该文研究了一种基于马赫-曾德尔干涉仪(MZI)结构的光纤法-珀(F-P)传感器扫描式互相关解调方法。解调系统中的光源采用C+L波段放大自发辐射(ASE)宽带光源,用于匹配F-P腔的MZI采用可调光纤延时线与压电陶瓷(PZT)式光纤相位调制器等集成光学器件构成,解调系统整体实现相对简便。实验中搭建的MZI,其臂长差在16.8 cm范围内连续可调,并可在15μm范围实现重复扫描,扫描速度达到50 Hz。理论仿真分析及实验验证表明,该套解调系统可以实现对F-P传感器的信号解调。A scanning cross-correlation demodulation method for fiber Fabry-Perot(F-P)sensor based on Mach-Zehnder interferometer(MZI)structure is investigated in this paper.The C+L band amplified spontaneous emission(ASE)light source with wide band is used in this demodulation system as light source,the MZI used to match the FP cavity is composed of tunable fiber delay line,PZT fiber phase modulator and other integrated optical devices,the implementation of the demodulation system is relatively simple.The arm length difference of MZI fabricated for the experiment is continuously adjustable in the range of 16.8 cm,and can achieve repeated scanning in the range of 15μm;with a scanning speed of 50 Hz.The theoretical simulation analysis and experimental verification show that the system can demodulate the signal of Fabry-Perot sensor.

关 键 词：光纤 法-珀传感器 马赫-曾德尔干涉仪 解调 压电陶瓷 

分 类 号：TN253[电子电信—物理电子学]