Fiber sensors possess characteristics such as compact structure, simplicity, electromagnetic
interference resistance, and reusability, making them widely applicable in various practical …

In this paper, high-order LP modes based Sagnac interference for temperature sensing are
proposed and investigated theoretically. Based on the specific high-order LP modes excited …

Utilization of the vernier effect in fiber optic interferometers represents the latest approach to
enhance the sensitivity and resolution in fiber optic sensors. In this paper, the Vernier effect …

Polycrystalline CuO films with different thickness were successfully produced by the DC
magnetron sputtering technique and subsequent thermal annealing at 500∘ C in air …

Optical fiber-based sensors, which show the merits of high sensitivity, real-time, and rapid
detection, have important research value in the detection of volatile organic compounds …

Hydrogen and methane are flammable and explosive gases, and their simultaneous
measurement holds significant importance in applications of industrial safety and energy …

Transformer overheating faults can lead to an increase in the transformer oil-dissolved
methane content, therefore, the high-precision in-situ detection of oil-dissolved methane is …

The polymer coating on the surface of traditional optical fiber would deform and melt at high
temperature. Metal coating which could maintain its shape in a large temperature scale is …

In this study, we investigated a novel ethanol gas sensor based on anisotropic nematic
liquid crystal (NLC) film-embedded cascade Sagnac interferometers (SIs). NLC film was …

A fiber-optic hydrogen (H2) sensor based on tilted fiber Bragg grating (TFBG) deposited with
Pd/tungsten oxide (WO3) nanofilm is proposed and demonstrated. The tilted grating planes …