Fiber optic vibration sensing is often referred to as Distributed Acoustic Sensing (DAS) – FOSA
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Fiber optic vibration sensing is often referred to as Distributed Acoustic Sensing (DAS)

FOSA
FOSA

It is a technology that uses the properties of light combined with the material properties of fibre optic cables to measure acoustic vibrations along the cable length. This allows for the continuous monitoring of long lengths of fiber optic cable listening for a variety of events. For railways applications, such events include rockfalls, landslides, track trespass and of course the vibrations a passing train generates….Even extremely small fibre movements such as those caused by acoustic vibrations cause the scattered light signals to change.
Fiber optic vibration sensing is often referred to as Distributed Acoustic Sensing (DAS)
Railway News September 26, 2023
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