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.
Technology Insights & Industry Commentary
News, commentary, and analysis on fiber optic sensing technology, industry trends, and emerging applications.
How Ultra-Weak FBG Arrays Support Pile Static Load Testing and Internal Force Analysis
UW-FBG arrays provide high-density strain measurements along test piles.
From Production Logging to Digital Oil Wells: How UW-FBG DAS/DTS Enhances Dynamic Well Evaluation
Oil and gas production is becoming more complex. Deep reservoirs, high water cut, low resource density, frequent geological disturbances, increased water or CO₂ injection — these challenges demand a new approach to downhole monitoring. For producing wells, uneven production along the well section, early gas…
Fiber Optic Cables Can Eavesdrop on Nearby Conversations — What This Means for Distributed Sensing
A recent article in Science magazine has sent ripples through both the geoscience and security communities. Researchers have demonstrated that the same fiber optic cables used to detect earthquakes and monitor infrastructure can also pick up — and transcribe — nearby human speech using AI.…
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