This article reviews the state-of-the-art in remote bonding of fiber Bragg grating sensors,
primarily for Lamb wave measurements in structures. The presence of damage in a structure …

An optical hot-wire flow sensing grid is presented using a single piece of self-heated optical
fiber to perform distributed flow measurement. The flow-induced temperature loss profiles …

This letter reports a fully distributed hydrogen sensing technique using Rayleigh
backscattering in palladium (Pd) and copper (Cu) coated optical fiber. The local in-fiber …

In this Letter, we developed a wireless passive vibration sensing method functional at
cryogenic temperatures (− 196 C). Traditional vibration sensors are either inconvenient or …

An active optical fiber gas sensor was developed in a cobalt-doped single mode fiber. This
fiber can be heated up to a few hundred degrees Celsius by a heating laser, and a fiber …

This paper proposes an all-optical-fiber sensor for continuous measurements of liquid
levels. The proposed sensor utilizes an optically absorbing vanadium doped optical fiber …

In this study, we investigated the temperature behavior of phase-shifted long-period fiber
gratings (PS-LPFGs) inscribed in two types of optical fiber: B/Ge and SMF28. The …

We present a continuous liquid level sensing system for both room temperature and
cryogenic fluids with millimeter spatial resolution. Change of in-fiber Rayleigh backscattering …

The invention proposed herein is a system and method for measuring the liquid levelina
container that employs an optic fiber sensor which is heated using a simple power Source …

It has been demonstrated that the Bragg gratings in a rare-earth doped fiber can be
effectively tuned based on the thermal effect induced by the pump absorption. In this letter …