This is the first comprehensive review on methods and materials for use in optical sensing of
pH values and on applications of such sensors. The Review starts with an introduction that …

Abstract The Internet-of-Things (IoT) has witnessed exponential growth over the past decade
and will significantly reshape human life from every aspect, eg, defense, environmental …

Interest in polymer optical fiber Bragg gratings (POFBGs) arises from the different material
properties and sensing modalities brought by polymers relative to silica. Polymer fibers …

Optical fibre sensors (OFS), as a result of their unique properties such as small size, no
interference with electromagnetic radiation, high sensitivity and the ability to design …

Corrosion has been a great concern in the oil and natural gas industry costing billions of
dollars annually in the US The ability to monitor corrosion online before structural integrity is …

Poly (acrylic acid)(PAA), as a highly ionic conductive hydrogel, can reversibly swell/deswell
according to the surrounding pH conditions. An optical maskless stereolithography …

A humidity and temperature optical fiber sensor based on a long-period grating (LPG), which
can provide simultaneous response to both magnitudes, is proposed and demonstrated via …

Optical fibre gratings have recently been suggested as optical platforms for chemical and
biochemical sensing. On the basis of the measurement of refractive index changes induced …

This Letter reports a Fe-C coated long period fiber gratings sensor with a grating period of
387±0.1 μm for corrosion monitoring of low carbon steel in a 3.5 wt.% NaCl solution. An …

The mode transition and the dispersion turning point have been explored for optimization of
thin-film coated long period fiber gratings during the last years. In this work and additional …