Thanks to the peculiarities of optical fiber and its ability to be combined with
nanotechnology, precise and accurate measurements of the changes in optical properties …

Nowadays, there have been extensive applications of biosensors for industrial production,
environment monitoring, disease diagnosis, and food safety. Attributed to periodically …

In this work, we proposed a long period fiber grating (LPFG) seawater salinity sensor based
on a bend insensitive single mode fiber (SMF). The average curvature sensitivity of LPFG in …

In this work, we report about our recent results concerning the fabrication of Long Period
Grating (LPG) sensors in several optical fibers, through the Electric Arc Discharge (EAD) …

A novel long-period fiber grating via periodically embedding no-core fiber (NCF) has been
achieved. The 11-period SMF-NCF-SMF-long period fiber grating (SNS-LPG) can exhibit an …

Over the last years, fiber optic sensors have been increasingly applied for applications in
environments with a high level of radiation as an alternative to electrical sensors, due to …

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 …

This paper presents an experimental study of the sensitivity characteristics to the
surrounding refractive index (SRI) in arc-induced long period gratings (LPGs), in order to …

In this paper, we investigated the evolution of the dispersion curves of long-period fiber
gratings (LPFGs) from room temperature down to 0 K. We considered gratings arc-induced …

Variations of seawater salinity often cause ocean internal waves, water masses and
stratification, which affect the stability of the ocean environment. Therefore, the study of …