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 …

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 …

摘要四十多年来, 我国光纤传感技术在经济发展和市场需求的牵引下快速成长.
针对我国光纤传感若干典型的细分技术领域, 概括性地给出了各个细分技术的发展历程 …

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 …

So far, the optical pulses used in phase-sensitive OTDR (ΦOTDR) were typically engineered
so as to have a constant phase along the pulse. In this work, it is demonstrated that by acting …

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 …

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 …

Phase-sensitive optical time domain reflectometry (Ф-OTDR) is an effective way to detect
vibrations and acoustic waves with high sensitivity, by interrogating coherent Rayleigh …

Fiber-optic distributed acoustic sensing (DAS) has proven to be a revolutionary technology
for the detection of seismic and acoustic waves with ultralarge scale and ultrahigh sensitivity …

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 …