Long period fiber gratings produced by the electric arc technique have found an increasing
interest by the scientific community due to their ease to fabricate, virtually enabling the …

In the last decade refractometric sensors have attracted an increasing interest by the
scientific community due to their ability to perform ambient monitoring, to assess food quality …

A fiber-optic refractive index (RI) sensor based on a long period fiber grating (LPFG) coated
with a zinc oxide (ZnO) thin film was fabricated and characterized. A method to overcoat the …

A new type of fibre-optic refractive index sensor based on a long period fibre grating (LPFG)
coated with a titanium dioxide (TiO 2) thin film was demonstrated. The wavelength shift of the …

A molybdenum sulfide/citric acid composite membrane-coated long period fiber grating
(LPFG) sensor was demonstrated and applied to detect the trace hydrogen sulfide gas. The …

In this work, we reviewed the most important achievements of INESC TEC related to the
fabrication of long-period fiber gratings using the electric arc technique. We focused on the …

Abstract The “lab-on-fiber” concept envisions novel and highly functionalized technological
platforms completely integrated in a single optical fiber that would allow the development of …

This review reports the implementation of novel nanostructured functional coatings by using
different surface engineering techniques based on wet chemistry. In the first section, the …

The wavelength sensitivity and spectral resolution of Mach–Zehnder fiber interferometers
obtained through a combination of two identical uncoated and titanium dioxide (TiO_2) …

An optical fiber sensor to measure gaseous oxygen is presented in this work. The device is
based on platinum tetrakis pentrafluorophenyporphine (PtTFPP), a reagent that shows a …