Compact Dual-Frequency Fiber Laser Accelerometer With Sub-μg Resolution  

作　　者：Qian CAO Long JIN Yizhi LIANG Linghao CHENG Bai-Ou GUAN 

机构地区：[1]Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of PhotonicsTechnology, Jinan University, Guangzhou, 510632, China

出　　处：《Photonic Sensors》2016年第2期115-120,共6页光子传感器（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （Nos. 61235005 and 11474133）, Guangdong Natural Science Foundation （No. $2013030013302）, and the Planned Science ＆ Technology Project of Guangzhou （Nos. 2012J510028 and 2014J2200003）. L. Jin is supported by the Department of Education, Guangdong Province （No. Yq2013021） and by Open Fund of the Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques （South China University of Technology）.

摘　　要：We demonstrate a compact and high-resolution dual-polarization fiber laser accelerometer. A spring-mass like scheme is constructed by fixing a 10-gram proof mass on the laser cavity to transduce applied vibration into beat-frequency change. The loading is located at the intensity maximum of intracavity light to maximize the optical response. The detection limit reaches 107 ng/Hz1/2 at 200 Hz. The working bandwidth ranges from 60 Hz to 600 Hz.We demonstrate a compact and high-resolution dual-polarization fiber laser accelerometer. A spring-mass like scheme is constructed by fixing a 10-gram proof mass on the laser cavity to transduce applied vibration into beat-frequency change. The loading is located at the intensity maximum of intracavity light to maximize the optical response. The detection limit reaches 107 ng/Hz1/2 at 200 Hz. The working bandwidth ranges from 60 Hz to 600 Hz.

关 键 词：Dual-frequency fiber lasers fiber Bragg grating photonic accelerometers 

分 类 号：TN248[电子电信—物理电子学] TH824.4[机械工程—仪器科学与技术]