Infrared and Laser Engineering, Volume. 46, Issue 3, 321003(2017)
Optical distributed acoustic sensing based on the phase optical time-domain reflectometry
A distributed acoustic sensing (DAS) scheme was presented. Rayleigh backscattered light which contained acoustic signal induced phase changes along the sensing fiber was fed into a Michelson interferometer, the phase changes were demodulated by the Phase Generated Carrier technology. A piezoelectric simulation experiment of acoustic vibration was designed. The DAS system realized 10 m location resolution of the acoustic source, and the flat frequency response through the experiment.
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Shang Ying, Wang Chen, Liu Xiaohui, Wang Chang, Zhao Wen′an, Peng Gangding. Optical distributed acoustic sensing based on the phase optical time-domain reflectometry[J]. Infrared and Laser Engineering, 2017, 46(3): 321003
Category: 先进光学材料
Received: Jul. 10, 2016
Accepted: Aug. 20, 2016
Published Online: Jun. 27, 2017
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