(a) Schematic illustration of the HW-TSC. The optical fiber was helically wound around a continuous mandrel to function as an acoustic sensor. (b) Photograph of the HW-TSC and the anechoic tank. One ...
The Distributed Acoustic Sensing (DAS) system based on Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR) uses narrow-linewidth lasers as high-coherence light sources, utilizing Rayleigh ...
Distributed acoustic sensing (DAS) systems represent cutting-edge technology in infrastructure monitoring, capable of detecting minute vibrations along fiber optic cables spanning tens of kilometers.