Distributed Acoustic Sensing (DAS) is a novel technology that uses fiber optics to sense and monitor vibrations. It is exerted to the sensing optical fiber and can accurately determine the position of the. Fiber optic vibration sensors that use existing fiber optic cables laid for communication have the advantage of being able to collectively and accurately measure vibrations over a wide range along the cables1), 2), and in recent years, they have been attracting attention as a means of environmental. Distributed Acoustic Sensing (DAS) systems detect strain changes and vibrations along optical fibers. The fiber optic cable functions as a distributed acoustic. High-bandwidth and multi-point acoustic and vibration sensing is a critical asset for real-time condition monitoring, maintenance, and surveillance applications.
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