19 October 2016 Acoustic emission detection based on distributed feedback fiber laser
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Proceedings Volume 10155, Optical Measurement Technology and Instrumentation; 101552B (2016) https://doi.org/10.1117/12.2246940
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
Compared with Fiber Bragg grating (FBG), Distributed Feedback fiber laser (DFB-FL) sensors has the advantages of ultra-narrow line-width, high output power, and low noise level, which will result in a better performance in ultra-slight acoustic emission (AE) detection. In this paper, we demonstrate a DFB fiber laser acoustic sensor. The intensity response of DFB-FL to external acoustic waves has been investigated. The frequency response of the DFB fiber laser based AE sensor is measured in aluminum plate. The experiment results show that the intensity modulated DFB fiber laser acoustic sensor can accurately record the continuous acoustic emission signal and the pencil lead-broken acoustic emission waves.
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Tan Yang, Tan Yang, Ying Song, Ying Song, Wen-tao Zhang, Wen-tao Zhang, Fang Li, Fang Li, } "Acoustic emission detection based on distributed feedback fiber laser", Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101552B (19 October 2016); doi: 10.1117/12.2246940; https://doi.org/10.1117/12.2246940
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