A compliant cylinder fiber-optic accelerometer with self-mixing technique

Qiang Ge; Shili Li; Jianmin Cheng; Jiang Li; Gang Wang; Yu Liu; Xuqiang Wu; Benli Yu

doi:10.1117/12.2502342

23 October 2018 A compliant cylinder fiber-optic accelerometer with self-mixing technique

Qiang Ge, Shili Li, Jianmin Cheng, Jiang Li, Gang Wang, Yu Liu, Xuqiang Wu, Benli Yu

Proceedings Volume 10821, Advanced Sensor Systems and Applications VIII; 108210Z (2018) https://doi.org/10.1117/12.2502342
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

A dynamic acceleration measurement system based on a high sensitivity compliant cylinder fiber optic probe and an all-fiber configuration Distributed Bragg Reflector (DBR) fiber laser with self-mixing technique is presented. The compliant cylinder fiber optic probe consists of a mass-block and an elastic cylinder twined with single mode fiber and can be regarded as being close to that of a simple mass spring system. Experimental results show that the signal to noise ratio (SNR) can achieve 50dB at 800 Hz under 1.5 mg acceleration stimulation, voltage sensitivity is 6.04 V/g and minimum detectable acceleration of the measuring system is 4.7μg/sqrt Hz at 800Hz. Moreover, the material of elastic cylinder is polyurethane (PU) which has better temperature stability and can be applied widely in the field of vibration measurements.

Citation Download Citation

Qiang Ge, Shili Li, Jianmin Cheng, Jiang Li, Gang Wang, Yu Liu, Xuqiang Wu, and Benli Yu "A compliant cylinder fiber-optic accelerometer with self-mixing technique", Proc. SPIE 10821, Advanced Sensor Systems and Applications VIII, 108210Z (23 October 2018); https://doi.org/10.1117/12.2502342

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