Phase-sensitive optical time-domain reflectometry (Φ-OTDR) has attracted numerous
attention due to its superior performance in detecting the weak perturbations along the fiber …

Distributed fiber acoustic sensing (DAS) technology can continuously spatially detect
disturbances along the sensing fiber over long distance in real time. It has many unique …

The integration of high-speed optical communication and distributed sensing could bring
intelligent functionalities to ubiquitous optical fibre networks, such as urban structure …

Continuous, real-time monitoring of surface seismic activity around the globe is of great
interest for acquiring new insight into global tomography analyses and for recognition of …

Linear infrastructures, such as railways, tunnels, and pipelines, play essential roles in
economic and social development worldwide. However, under the influence of geohazards …

Distributed acoustic sensing (DAS) using coherent Rayleigh backscattering in an optical
fiber has become a ubiquitous technique for monitoring multiple dynamic events in real time …

We review recent advances in distributed fiber optic sensing (DFOS) and their applications.
The scattering mechanisms in glass, which are exploited for reflectometry-based DFOS, are …

Trackside monitoring of railways provides useful data for understanding the condition and
mechanical behaviour of railway track, prior research has shown that railway track …

In 2016, a novel interrogation technique for phase-sensitive (Φ) OTDR was mathematically
formalized and experimentally demonstrated, based on the use of a chirped-pulse as a …

Phase-sensitive optical time-domain reflectometry (Φ-OTDR), which utilizes the phase
information of Rayleigh scattered lightwave inside optical fiber, could turn a fiber cable into a …