This paper presents a review of the development of optical fibers made of multiple materials,
particularly including silica glass, soft glass, polymers, hydrogels, biomaterials …

An approach of phase-shift transform is proposed and demonstrated to suppress the
interference fading in phase sensitive optical time domain reflectometry (Φ-OTDR). The …

To overcome the low sensitivity of power transformer partial discharge (PD) detection by a
lead zirconate titanate (PZT) sensor, we propose a novel PD detection system based on …

Monitoring of thermoplastic carbon reinforced composites is critical for the safe operation
and optimization of composite structures. Strain measurement during their manufacturing …

A high-sensitivity Fabry-Perot interferometer (FPI) strain sensor based on a concave-core
photonic crystal fiber (CPCF) was proposed and demonstrated. The FPI was formed by …

For FPI sensor demodulation systems to be used in actual engineering measurement, they
must have high performance, low cost, stability, and scalability. Excellent performance …

A high-sensitivity, low-cost, ultrathin microbubble structure based on an Unsymmetrical air-
microbubble Fabry-Pérot interferometer (UAFPI) is proposed. The UAFPI, which has an …

This paper presents a new methodology for measuring vibration and temperature using fiber
Bragg grating (FBG) sensors embedded in carbon fiber polymer attached directly on the iron …

An optical fiber sensing and signal demodulation technology based on Mach-Zehnder
interferometer (MZI) and orbital angular momentum (OAM) beam was proposed in this work …

To address the problem of decreased recognition accuracy of event samples in practical
phase-sensitive optical time-domain reflectometer (Φ-OTDR) monitoring scenarios due to …