Acoustic emission detection using a fiber laser array

Wentao Zhang; Wenzhu Huang; Huaixiang Ma; Fang Li

doi:10.1117/12.974908

17 October 2012 Acoustic emission detection using a fiber laser array

Wentao Zhang, Wenzhu Huang, Huaixiang Ma, Fang Li

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842134 (2012) https://doi.org/10.1117/12.974908
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

In this paper we repot a novel acoustic emission detection method using a fiber laser array. The ultra-narrow line width of the DFB fiber laser will result in a low equivalent noise level when using a fiber optic interferometric demodulation. A minimum detectable strain of 10^-12 is achieved in the experiment. Three fiber lasers are used in the array and the acoustic emission is detected. The result is compared with that of a piezoelectric acoustic emission sensor.

Citation Download Citation

Wentao Zhang, Wenzhu Huang, Huaixiang Ma, and Fang Li "Acoustic emission detection using a fiber laser array", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842134 (17 October 2012); https://doi.org/10.1117/12.974908

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