Chinese Optics Letters, 2016, 14 (12): 120602, Published Online: Aug. 2, 2018
Acoustic emission detection using intensity-modulated DFB fiber laser sensor Download: 689次
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.
Tan Yang, Ying Song, Wentao Zhang, Fang Li. Acoustic emission detection using intensity-modulated DFB fiber laser sensor[J]. Chinese Optics Letters, 2016, 14(12): 120602.