High-Performance Distributed Acoustic Sensing with Coherent Detection
2022 IEEE 10th International Conference on Information, Communication and Networks (ICICN)(2022)
Abstract
Distributed fiber acoustic sensing (DAS) has appealing application prospects. DAS is usually based on phase-sensitive optical time-domain reflectometry (Phi-OTDR) and similar techniques, which can sense the phase change of in-fiber Rayleigh backscattering light caused by the outside perturbation. Coherent detection, which can recover both the intensity and phase of backscattered light, has contributed to a rapid development of DAS technologies in recent years. In this paper, the major advancements of DAS coherent detection from UESTC group are discussed.
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Key words
distributed acoustic sensing,Rayleigh scattering,coherent detection,phase-sensitive optical time-domain reflectometry
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