Distributed temperature sensing market was valued at US$ 712.6 million in 2024 and is projected to hit the market valuation of US$ 1,501.05 million by 2033 at a CAGR of 8.63% during the forecast ...

We report a novel method of event discrimination using phase correlation in Φ-OTDR system based on coherent detection. The phase change demodulated from the Rayleigh backscattering light is the result ...

We demonstrate a $300-\\mathrm{km}$ unrepeatered $\\Phi$-OTDR with 1 -meter-high spatial resolution, achieving a record of 300000 effective sensing points through fractional Fourier transform for ...