基于一体化结构光纤加速度计的三维光纤矢量水听器  

A three-dimensional optical fiber vector hydrophone based on optical fiber accelerometers with integrated structural design

作　　者：陈毅 刘飞[3] 佟昊阳[2] 李文静 金晓峰 徐平[2] CHEN Yi;LIU Fei;TONG Haoyang;LI Wenjing;JIN Xiaofeng;XU Ping(College of Information Science and Electronic Engineering,Zhejiang University,Hangzhou 310027;Hangzhou Applied Acoustics Research Institute,Hangzhou 311400;School of Computer and Communication Engineering,University of Science and Technology Beijing,Beijing 100083)

机构地区：[1]浙江大学信息与电子工程学院,杭州310027 [2]杭州应用声学研究所,杭州311400 [3]北京科技大学计算机与通信工程学院,北京100083

出　　处：《声学学报》2025年第1期157-164,共8页Acta Acustica

基　　金：国家自然科学基金项目(61871345)资助。

摘　　要：提出了一种基于一体化结构光纤加速度计的同振式三维光纤矢量水听器。利用质量–弹簧系统的一体化结构设计及其工作原理,研制了基于一体化结构的光纤加速度计。在此基础上,采用推挽式结构和6只光纤加速度计,设计制作了一只同振式三维光纤矢量水听器。利用驻波管比较法和差分延时外差解调技术进行测试,结果表明,该光纤矢量水听器在20~500 Hz频率范围有较平坦的加速度相移灵敏度频率响应。以X通道为例,其平均灵敏度为34.7 dB(re.1 rad/(m·s^(-2))),与声质点振动理论计算结果(36.5 dB)和有限元仿真结果(35.5 dB)接近。A co-vibrating three-dimensional optical fiber vector hydrophone(OFVH)based on the optical fiber accelerometer with integrated structural design is proposed.Utilizing the integrated structural design and its working principle of mass-spring system,the optical fiber accelerometer with integrated structural design is developed.On this basis,a three-dimensional OFVH is designed and fabricated using the push-pull configuration and six optical fiber accelerometers.The OFVH is measured using standing wave tube comparison method and differential delay heterodyne demodulation technique,the results show that the OFVH has a relatively flat frequency response of acceleration phase-shifted sensitivity in the frequency range of 20–500 Hz.For the X channel,the average sensitivity is about 34.7 dB(re.1 rad/(m·s^(-2))),close to the sound particle vibration theoretical calculation result(36.5 dB)and the finite element simulation result(35.5 dB).

关 键 词：矢量水听器 光纤 加速度计 相移灵敏度 

分 类 号：TB565.1[交通运输工程—水声工程]