Acoustic emission detection using intensity-modulated DFB fiber laser sensor

被引：11
|
作者：
Yang, Tan [1 ]
Song, Ying [1 ]
Zhang, Wentao [2 ]
Li, Fang [2 ]
机构：
[1] Shijiazhuang Tiedao Univ, Sch Traff & Transportat, Shijiazhuang 050043, Peoples R China
[2] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2016年 / 14卷 / 12期
关键词：
HYDROPHONE;
D O I：
10.3788/COL201614.120602
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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 x 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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页数：4
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