Laser & Optoelectronics Progress, Volume. 62, Issue 5, 0506004(2025)

High-Capacity, High-Speed Demodulation System for Fiber Bragg Grating Sensor Arrays Using Dispersion Fourier Transform Technology

Yinuo Fang*, Qianqian Huang, Kaiquan Yan, Zishuo Xu, Mingjiao Wang, Kai Wang, Yuehui Ma, Weixi Li, Yunqi Liu, and Chengbo Mou
Author Affiliations
  • Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China
  • show less

    We propose a high-capacity, high-speed demodulation system for fiber Bragg grating (FBG) sensor arrays using dispersion Fourier transform technology. The proposed system includes a mode-locked laser, a nonlinear amplifier module, a sensing link, a dispersive element, and a signal acquisition and processing module. The sensor capacity of the system is substantially improved by employing a nonlinear amplifier to broaden the spectrum of the mode-locked laser, enabling high-speed multiplexing and demodulation of FBG sensing arrays. The temperature demodulation experiments demonstrate that the proposed system offers high demodulation accuracy and stability, simultaneously demodulating 38 FBG sensors in real time at a demodulation rate of 16.24 MHz.

    Keywords
    Tools

    Get Citation

    Copy Citation Text

    Yinuo Fang, Qianqian Huang, Kaiquan Yan, Zishuo Xu, Mingjiao Wang, Kai Wang, Yuehui Ma, Weixi Li, Yunqi Liu, Chengbo Mou. High-Capacity, High-Speed Demodulation System for Fiber Bragg Grating Sensor Arrays Using Dispersion Fourier Transform Technology[J]. Laser & Optoelectronics Progress, 2025, 62(5): 0506004

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Jun. 7, 2024

    Accepted: Jul. 16, 2024

    Published Online: Mar. 12, 2025

    The Author Email:

    DOI:10.3788/LOP241446

    Topics