UW-FBG Research & Publications
Peer-reviewed research papers on ultra-weak fiber Bragg grating (UW-FBG) technology — from demodulation system design to distributed sensing cable development and industrial applications.
Our Research Papers
Featuring 6 research publications from China Three Gorges University and partner institutions, covering UW-FBG demodulation systems, sensing cables, and real-world applications.
A Modularized Ultra-Weak Fiber Bragg Grating Demodulation System
A modularized UW-FBG demodulation system for field monitoring. Features 250 MSPS high-speed A/D acquisition, embedded FPGA-based hardware, and real-time 4-channel sensor array demodulation. Achieves 10km single-channel sensing distance.
A Modular Distributed Acoustic Sensing (DAS) Demodulation System Based on UW-FBG
A low-power, high-sensitivity modular DAS demodulation system. Uses Zynq embedded circuits with 3×3 arctangent phase demodulation. Achieves
OFDR Demodulation System Based on Adaptive Gaussian Fitting for Ultra-Weak Fiber Bragg Gratings
An OFDR demodulation system using adaptive Gaussian fitting. Features PSD thresholding and 3σ criterion for dynamic grating interval trimming. Achieves 1.95M gratings/second with
Distributed Strain Sensing Fiber Optic Cable Based on Ultra-Weak Fiber Bragg Gratings
A distributed strain sensing cable based on FRP encapsulation for UW-FBG arrays. Achieves >99% strain transfer efficiency with 0.2m grating pitch. Hot-pultrusion manufactured 1.0mm FRP sensing fiber.
Acoustic Response Characteristics of Stranded-Structure DAS Sensing Cable Based on Ultra-Weak FBG Arrays
A stranded-structure DAS sensing cable with enhanced acoustic sensitivity. Achieves 77.3mrad/kPa at 100Hz and 83.23mrad/kPa average. Validated on 110m pipeline leak simulation.
Belt Conveyor Idler Fault Detection System Based on uwDAS Cable and Fiber Optic Microphone Combined Sensing
A fault detection system combining fiber optic microphones and uwDAS cables for belt conveyor idlers. Achieves 350 rad/s phase change detection and 350× spectral energy increase at fault positions.
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