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Dual Sagnac Interferometer Distributed Optical Fiber Localization Method Based on Hilbert–Huang Transform

Author

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  • Zhiheng Liu

    (College of Electronic Information Engineering, Hebei University, Baoding 071002, China
    Key Laboratory of Opto-Electronic Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
    These authors contributed equally to this work.)

  • Yongqing Wang

    (College of Electronic Information Engineering, Hebei University, Baoding 071002, China
    These authors contributed equally to this work.)

  • Jiuxi Cheng

    (College of Electronic Information Engineering, Hebei University, Baoding 071002, China)

  • Peijie Han

    (State Grid Shanxi Electric Power Corporation, Taiyuan 032100, China)

  • Zhibin Liu

    (College of Electronic Information Engineering, Hebei University, Baoding 071002, China)

  • Zhaoyan Zhang

    (College of Electronic Information Engineering, Hebei University, Baoding 071002, China)

  • Xiaoguang Li

    (Science and Technology Department, Hebei University, Baoding 071002, China)

  • Jianquan Yao

    (Key Laboratory of Opto-Electronic Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China)

Abstract

In order to solve the problem that the dual Mach Zehnder (M-Z) interferometer system is easily affected by external environmental noise, a data signal-processing scheme based on Hilbert–Huang transform (HHT) is proposed to achieve high-precision location with distributed optical fibers. The polarization compensation module has a built-in dual Sagnac interferometer system which is used to stabilize the polarization state of the Sagnac interferometer. The eigenmode function is obtained by empirical mode decomposition of the received two optical signals, and then the Hilbert spectrum is obtained by superimposing the Hilbert transform, so that the high-similarity curve caused by the vibration signal can be clearly and intuitively extracted. The optical signal information can be calculated based on the cross-correlation and delay estimation algorithm to accurately obtain the vibration position information. The experimental results show that the positioning accuracy can reach ±11 m, with a sensing fiber length of 15 km and a sampling rate of 10 MHz. It is proven that the distributed optical fiber sensing technology based on the dual Sagnac interferometer system has high practical application value.

Suggested Citation

  • Zhiheng Liu & Yongqing Wang & Jiuxi Cheng & Peijie Han & Zhibin Liu & Zhaoyan Zhang & Xiaoguang Li & Jianquan Yao, 2023. "Dual Sagnac Interferometer Distributed Optical Fiber Localization Method Based on Hilbert–Huang Transform," Energies, MDPI, vol. 16(8), pages 1-13, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:8:p:3494-:d:1125487
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    References listed on IDEAS

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    1. Kai Chen & Yi Yue & Yuejin Tang, 2021. "Research on Temperature Monitoring Method of Cable on 10 kV Railway Power Transmission Lines Based on Distributed Temperature Sensor," Energies, MDPI, vol. 14(12), pages 1-15, June.
    2. Yongjie Ma & Yanjun Zhang & Yuxiang Cheng & Yu Zhang & Xuefeng Gao & Kun Shan, 2022. "A Case Study of Field Thermal Response Test and Laboratory Test Based on Distributed Optical Fiber Temperature Sensor," Energies, MDPI, vol. 15(21), pages 1-20, October.
    3. Iago Búa-Núñez & Julio E. Posada-Román & José A. García-Souto, 2021. "Multichannel Detection of Acoustic Emissions and Localization of the Source with External and Internal Sensors for Partial Discharge Monitoring of Power Transformers," Energies, MDPI, vol. 14(23), pages 1-20, November.
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