Enhanced Rayleigh Scattering refers to an intensified or enhanced scattering of light, typically in a specific direction or under certain conditions, beyond what is predicted by Rayleigh scattering alone. Rayleigh scattering is a phenomenon that occurs when light interacts with particles or molecules smaller than the wavelength of the incident light. This scattering is inversely proportional to the fourth power of the wavelength, leading to shorter wavelengths (blue light) scattering more effectively than longer wavelengths (red light).

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Long Reach Fibre Optic Distributed Acoustic Sensing using Enhanced Scattering Fibre

We report significant noise reduction in distributed acoustic sensing (DAS) link using enhanced-scatter fibre (ESF). The longest reach of 195km DAS link without inline amplifications is also demonstrated. We further present demonstration of simultaneous fibre-optic sensing and 400Gb/s data transmissions over 195km fibre using ESF.