Photonic Sensors, 2016, 6 (2): 115, Published Online: Oct. 20, 2016
Compact Dual-Frequency Fiber Laser Accelerometer With Sub-μg Resolution
Abstract
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.
Qian CAO, Long JIN, Yizhi LIANG, Linghao CHENG, Bai-Ou GUAN. Compact Dual-Frequency Fiber Laser Accelerometer With Sub-μg Resolution[J]. Photonic Sensors, 2016, 6(2): 115.