Over the past few decades, optical fibers have been widely deployed to implement various
applications in high-speed long-distance telecommunication, optical imaging, ultrafast …

Fiber-optic distributed acoustic sensor (DAS) is one of the most attractive and promising fiber-
optic sensing technologies in the recent decade. It can simultaneously detect and retrieve …

This book explains physical principles, unique benefits, broad categories, implementation
aspects, and performance criteria of distributed optical fiber sensors (DOFS). For each kind …

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 …

Rayleigh, Brillouin and Raman scatterings in fibers result from the interaction of photons with
local material characteristic features like density, temperature and strain. For example an …

The vibration recognition along the fiber is still a challenging problem in pipeline monitoring
with distributed optical-fiber acoustic sensor (DAS), because the burying environments in a …

An ultra-long phase-sensitive optical time domain reflectometry (Φ-OTDR) that can achieve
high-sensitivity intrusion detection over 131.5 km fiber with high spatial resolution of 8m is …

For a distributed fiber-optic vibration sensor (DFVS), the vibration signal extracted from the
phase of backscattering has a linear response to the applied vibration, and is more attractive …

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 …

Distributed fiber-optic vibration sensors receive extensive investigation and play a significant
role in the sensor panorama. Optical parameters such as light intensity, phase, polarization …