摘要
该文研究了一种基于强度解调的低成本光纤悬臂式加速度计。该加速度计由接收光纤、发射光纤、陶瓷插芯和陶瓷套管组成,接收光纤和发射光纤均为单模光纤(SMF)。对该加速度计的灵敏度进行理论分析并制作了一个光学加速度计,搭建了实验系统。实验结果表明,在工作频带30~1000 Hz,该加速度计具有71.5 mV/g(g=9.8 m/s^(2))的灵敏度和良好的相频特性。
A low-cost fiber cantilever accelerometer based on intensity demodulation is proposed in this paper.The accelerometer consists of receiving fiber,emitting fiber,ceramic ferrule and ceramic sleeve,both the receiving fiber and emitting fiber are single-mode fiber(SMF).The sensitivity of the proposed accelerometer is analyzed theoretically.A prototype of the accelerometer is fabricated,and the experimental system is set up.The experimental results show that the accelerometer has a sensitivity of 71.5 mV/g and good phase frequency characteristic at the working bandwidth from 30 Hz to 1000 Hz.
作者
吴明泽
洪连进
WU Mingze;HONG Lianjin(Key Laboratory of Acoustic Science and Technology,Harbin Engineering University,Harbin 150001,China;Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University),Ministry of Industry and Information Technology,Harbin 150001,China;College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《压电与声光》
CAS
北大核心
2022年第3期377-380,共4页
Piezoelectrics & Acoustooptics
关键词
强度解调
光纤
悬臂梁
加速度计
intensity demodulation
fiber
cantilever
accelerometer
