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Acoustic emission detection using intensity-modulated DFB fiber laser sensor

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Abstract

The bonded distributed feedback (DFB) fiber laser (FL) acoustic emission sensor and the intensity response of the DFB-FL to external acoustic emissions are investigated. The dynamic sensitivity of the DFB-FL is calibrated by a referenced piezoelectric receiver. In the DFB-FL we used here, the minimum detectable signal is 2×10?6 m/s at 5 kHz. Using wavelet packet technology, the collected signals are analyzed, which confirms that an intensity-modulated DFB-FL sensor can be used to detect acoustic emission signals.

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DOI:10.3788/col201614.120602

所属栏目:Fiber optics and optical communication

收稿日期:2016-08-27

录用日期:2016-10-14

网络出版日期:2016-11-14

作者单位    点击查看

Tan Yang:School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
Ying Song:School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
Wentao Zhang:Optoelectronic System Lab,Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
and Fang Li:Optoelectronic System Lab,Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

联系人作者:联系作者(zhangwt@semi.ac.cn)

备注:This work was supported by the National 863 Program of China (No. 2014AA093406), the Youth Innovation Promotion Association of CAS (No. 2016106), the Project of Observation Instrument Development for Integrated Geophysical Field of China Mainland (No. Y201606), and the Key Project of Hebei Educational Committee (No. BJ2016048).

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引用该论文

Tan Yang, Ying Song, Wentao Zhang, and Fang Li, "Acoustic emission detection using intensity-modulated DFB fiber laser sensor," Chinese Optics Letters 14(12), 120602 (2016)

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