Fiber grating demodulator and demodulation method

Through modular design and multi-channel synchronous processing, the fiber Bragg grating demodulator achieves high-speed and high-precision demodulation, solving the problems of difficulty in balancing speed and accuracy, poor signal dynamic range and noise handling, insufficient multi-channel real-time processing capability and poor system stability in the existing technology, and adapting to long-term stable operation in complex industrial environments.

CN122108216APending Publication Date: 2026-05-29ANHUI JITIAN TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI JITIAN TECHNOLOGY CO LTD
Filing Date
2026-02-14
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing fiber Bragg grating demodulators suffer from several problems, including difficulty in simultaneously achieving high-speed measurement and high precision, poor signal dynamic range and noise processing, insufficient multi-channel real-time processing capabilities, and poor system stability.

Method used

It adopts a modular design, including an optical module, a photoelectric conversion module, a signal conditioning module, and a control module. Through linear scanning optical signal distribution, composite amplification circuit, wavelength error correction of reference FBG, and multi-channel synchronous analog-to-digital conversion, it realizes optimized processing and precise demodulation of multiple signals.

Benefits of technology

It improves the demodulation speed, accuracy and stability of fiber Bragg grating demodulators, adapts to long-term stable operation in complex industrial environments, solves the bottleneck problem of traditional demodulators, and meets the needs of large-scale sensor networks.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122108216A_ABST
    Figure CN122108216A_ABST
Patent Text Reader

Abstract

The application relates to the technical field of optical fiber sensing, and specifically discloses a fiber grating demodulator and a demodulation method. The fiber grating demodulator comprises an optical module, which is used for outputting a linear scanning light signal in response to a driving signal of a control module, and distributing the linear scanning light signal to multiple fiber Bragg grating (FBG) sensing channels to obtain multiple reflection light signals; an optoelectronic conversion module, which is used for converting the multiple reflection light signals into multiple current signals; a signal conditioning module, which is used for performing signal optimization processing on the multiple current signals through multiple composite amplification circuits to obtain multiple optimized electric signals; and the control module, which is used for correcting the wavelengths of the multiple optimized electric signals by using the wavelength error of a reference FBG to determine multiple target electric signals. Thus, the demodulation speed, precision and stability of the fiber grating demodulator can be effectively improved, the fiber grating demodulator is easy to expand, and the fiber grating demodulator has strong multi-channel real-time processing capability.
Need to check novelty before this filing date? Find Prior Art