A high-speed demodulation scheme for phi-OTDR system based on dual-sideband modulation

Yixuan Wang; Junfeng Jiang; Kun Liu; Shuang Wang; Zhenyang Ding; Tianhua Xu; Tiegen Liu

doi:10.1117/12.2691710

27 September 2023 A high-speed demodulation scheme for Φ-OTDR system based on dual-sideband modulation

Yixuan Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Zhenyang Ding, Tianhua Xu, Tiegen Liu

Proceedings Volume 12813, Asia-Pacific Optical Sensors Conference (APOS 2023); 1281307 (2023) https://doi.org/10.1117/12.2691710
Event: Asia Pacific Optical Sensors Conference 2023, 2023, Tianjin, China

Abstract

A dynamic strain range extension method is proposed for fiber distributed sensing system based on dual-sideband frequency modulation pulse. Aiming at the problem of huge raw data and slow processing speed of the dual-sideband system, the RF circuit module scheme and corresponding algorithms are proposed to enhance the system's ability to apply to real-world scenarios. This study extends the range of measurable dynamic strain in the system and effectively tackles the challenges of storage and computational efficiency as data volume increases. It enhances the system's ability to adapt to complex environments.

Citation Download Citation

Yixuan Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Zhenyang Ding, Tianhua Xu, and Tiegen Liu "A high-speed demodulation scheme for Φ-OTDR system based on dual-sideband modulation", Proc. SPIE 12813, Asia-Pacific Optical Sensors Conference (APOS 2023), 1281307 (27 September 2023); https://doi.org/10.1117/12.2691710

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