The magnetic field is crucial in fields like geography, industrial production and medical
treatment. The requirement for magnetic field sensors is increasing, thus a class of high …

Compact interferometers based on waveguiding structures have found countless
applications in refractive index measurements, chemical sensing, as well as temperature …

Here, we report an optical fiber sensor capable of performing strain-insensitive simultaneous
measurements of torsion and temperature using a long-period fiber grating (LPFG) inscribed …

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 …

A miniature temperature-independent curvature sensor was proposed and prepared by
using a phase-shifted long-period fiber grating (LPG) fabricated from deeply tapered …

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 …

Optical magnetometers with high resolution, integrability, and reconfigurability have been
central to the development of advance photonic devices for remote and efficient magnetic …

Optical fiber surface plasmon resonance (SPR) biosensors have great potential in the early
stage detection of diseases, owing to their advantages of fast detection speed, high …

A compact refractive index sensor is proposed and investigated based on multimode fiber-
micro tapered single-mode fiber-multimode fiber (MTSM) structure. The micro tapered single …

A detailed study of turn around point (TAP) long period fiber gratings (LPFGs) with coupling
to the asymmetric cladding modes of a standard single-mode fiber (SMF-28e), fabricated by …