Environmental monitoring has become essential in order to deal with environmental
resources efficiently and safely in the realm of green technology. Environmental monitoring …

Recent research on fibre optic long-period gratings (LPGs) is reviewed with emphasis
placed upon the characteristics of LPGs that make them attractive for applications in sensing …

In the upcoming space revolutions aiming at the implementation of automated, smart, and
self-aware crewless vehicles and reusable spacecraft, sensors play a significant role in the …

In this paper, we propose a new technique to fabricate long period gratings (LPGs) by
mechanically applying a force to an optical fiber enclosed in a low-cost periodic 3-D printed …

The electric arc technique allows the inscription of long-period gratings (LPGs) virtually in all
types of fibers, including non-photosensitive fibers, the case of non-Ge–doped photonic …

The first volume of The Handbook of Humidity Measurement focuses on the review of
devices based on optical principles of measurement such as optical UV, fluorescence …

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 …

In this paper, we propose and demonstrate a photosensitive polymer-based micro-nano
long-period fiber grating (PPMN-LPFG) for refractive index (RI) sensing. We coat liquid …

A fibre Bragg grating sensing configuration is presented for simultaneous measurement of
strain and temperature. The proposed concept relies on writing a single Bragg grating on the …

In this work, we demonstrate for the first time the capability to inscribe long-period gratings
(LPGs) with UV radiation using simple and low cost amplitude masks fabricated with a …