Fiber Optics in DAS Technology FOTAS uses fiber optic cables for Distributed Acoustic Sensing. Most of the time, DAS systems use fiber optic cables. Light waves propagate into the fiber optic cable affected by acoustic waves. These affected lights can be detected by devices, for instance, Optical Time Domain Reflectometry OTDR. Fiber optic cables’ sensitivity makes DAS systems indisp... https://fotas.samm.com/portfolio/distributed-acoustic-sensing/