Fiber Bragg grating (FBG) array is a powerful technique for quasi-distributed sensing along
the entire length of sensing fiber with fast response and high precision. It has been widely …

In recent years, phase demodulation methods for optical fiber vibration sensors (OFVS) have
attracted more and more attention, aiming to accurately detect vibration signals. The …

To achieve data-driven intelligence in engineering applications, the key requirements for
distributed optical fiber sensor networks are large capacity, long distance, dense distribution …

Water leakage poses a serious threat to tunnel integrity and safety, making early detection
critical. However, traditional techniques struggle with high-sensitivity leak monitoring. This …

We present a review of the basic operating principles and measurement schemes of
standalone and hybrid distributed optical fiber sensors based on Raman and Brillouin …

The determination of subsurface deformation is critical to understanding the subsurface
dynamic processes, but most of conventional monitoring methods still have challenges in …

A long distance range over tens of kilometers is a prerequisite for a wide range of distributed
fiber optic vibration sensing applications. We significantly extend the attenuation-limited …

We present results demonstrating several beneficial effects on distributed fiber optic
vibration sensing (DVS) functionality and performance resulting from utilizing standard …

The phase-sensitive optical time domain reflectometers (Φ-OTDR), which can realize
distributed acoustic sensing, has been widely applied in health monitoring of civil structures …

Optical fiber distributed vibration sensor based on dual Mach-Zehnder interferometer (DMZI)
has been extensively studied for vibration detections. Whereas the accurate signal …