Optical distributed acoustic sensing based on the phase optical time-domain reflectometry

Shang Ying; Wang Chen; Liu Xiaohui; Wang Chang; Zhao Wen'an; Peng Gangding

doi:10.3788/IRLA201746.0321003

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.

Optical distributed acoustic sensing based on the phase optical time-domain reflectometry

1. Shandong Key Laboratory of Optical Fiber Sensing Technologies,Laser Institute of Shandong Academy of Sciences,Jinan 250014,China;

2. School of Electrical Engineering &Telecommunications,University of New South Wales,NSW 2052,Australia

Received Date: 2016-07-10

Rev Recd Date: 2016-08-20

Publish Date: 2017-03-25

Key words:

Abstract: 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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Reference (16)

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Optical distributed acoustic sensing based on the phase optical time-domain reflectometry

doi: 10.3788/IRLA201746.0321003

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