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.

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.

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 <5pm accuracy, reducing logic units by 51.2% and memory by 73.2%.

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.

A low-power, high-sensitivity modular DAS demodulation system. Uses Zynq embedded circuits with 3×3 arctangent phase demodulation. Achieves <20W power, 2.16pε/√Hz noise floor, and ~2.6% of traditional DAS data output volume.

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 <13W power consumption and >10km single-channel sensing distance.