Fast-recovering phi-OTDR system based on multi-sideband pulse modulation

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

doi:10.1117/12.2686669

27 November 2023 Fast-recovering phi-OTDR system based on multi-sideband pulse modulation

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

Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 127710G (2023) https://doi.org/10.1117/12.2686669
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

Distributed acoustic sensing technology is gaining attention as a valuable tool for seismic monitoring, oil and gas pipeline imaging, and underwater cable observation. Phase-sensitive Optical Time Domain Reflectometry (see abstract for this (phi -OTDR) is a popular technique within this field, known for its ability to recover high signal-to-noise ratio acoustic vibration signals. However, traditional see abstract for this phi-OTDR systems have limitations in observing both local microseismic events and strong seismic motions simultaneously and requiring months of data analysis and processing time. To address this, a fast recovery system based on multi-sideband pulse modulation is proposed. This system allows for simultaneous detection of different strain ranges at a low sampling rate, effectively managing large data volumes and enabling fast demodulation. This work will bring some inspiration to engineering applications and instrumentalization.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yixuan Wang, Junfeng Jiang, Kun Liu, Shuang Wang, Zhenyang Ding, Tianhua Xu, and Tiegen Liu "Fast-recovering phi-OTDR system based on multi-sideband pulse modulation", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 127710G (27 November 2023); https://doi.org/10.1117/12.2686669

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