光纤法珀振动传感器时分三波长解调技术  

Time-division Three-wavelength Demodulation Technique for Fiber Optic Fabry-Perot Vibration Sensor

作　　者：张琦[1] 任乾钰 赵蔼浩 高凯波 贾平岗[1] Zhang Qi;Ren Qianyu;Zhao Aihao;Gao Kaibo;Jia Pinggang(State Key Laboratory of Dynamic Measurement Technology,North University of China,Taiyuan 038300,China)

机构地区：[1]中北大学中北大学省部共建动态测试技术国家重点实验室,太原038300

出　　处：《单片机与嵌入式系统应用》2023年第5期65-69,共5页Microcontrollers & Embedded Systems

基　　金：中国国家自然科学基金(52075505);国家科技重大专项(J2019-V-0015-0110)。

摘　　要：针对非本征型光纤法布里珀罗干涉(简称EFPI)传感器的动态解调,提出一种基于可调谐激光器的时分三波长解调方案。基于可调谐激光器波长切换速度快、调谐范围宽的优点,采用波长切换的方式来代替传统的3台激光器,简化了解调系统。实验结果表明,解调方案的最大非线性误差为2.3%,解调速度为78 kHz。该解调技术具有系统简单紧凑、成本低、速度快等优点,在动态信号测量领域具有一定应用价值。A time-division three-wavelength demodulation scheme based on tunable laser is studied for dynamic demodulation of non-intrinsic fiber Fabry-Perot interference(EFPI)sensor.Based on the advantages of fast wavelength switching and wide tuning range,the tunable laser is replaced by the traditional three lasers by the way of wavelength switching,which simplifies the tuning system.The experiment results show that the maximum nonlinear error of the demodulation scheme is 2.3%.The demodulation speed of the demodulation system is 78 kHz.The demodulation technique has the advantages of simple and compact system,low cost and high speed,and has certain application value in the field of dynamic signal measurement.

关 键 词：三波长动态解调 可调谐激光器S7500 EFPI振动传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]