Arc-induced long-period fiber gratings at INESC TEC. Part I: Fabrication, characterization and mechanisms of formation

G Rego, P Caldas, OV Ivanov - Sensors, 2021 - mdpi.com
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 …

Long-period fiber grating based on inner microholes in optical fiber

F Lan, DN Wang - Optics Letters, 2021 - opg.optica.org
A new, to the best of our knowledge, type of long-period fiber grating based on inner
microholes in an optical fiber core is proposed and demonstrated. The device is fabricated …

Multi-parameter sensor with high sensitivity based on a long-period fiber grating prepared by a polarization-maintaining fiber

S Zhang, T Geng, W Sun - Optics Letters, 2022 - opg.optica.org
We propose what we believe to be a novel long-period fiber grating (LPFG) based on a
polarization-maintaining fiber (PMF) and single-mode fiber. Due to the principal axis of …

Phage-modified dual-peak long-period fiber grating biosensor for ultrasensitive, rapid and specific detection of pathogen strains

S Zhu, T Liu, Z Tao, Y Li, T Li, P Zhang… - Sensors and Actuators B …, 2024 - Elsevier
Herein, we present an ultrasensitive, rapid and specific phage-modified dual-peak long-
period fiber grating (Phage-DP-LPFG) biosensor for detecting foodborne pathogens …

Turn around point long period fiber gratings with coupling to asymmetric cladding modes fabricated by a femtosecond laser and coated with titanium dioxide

D Viveiros, JMMM de Almeida, L Coelho… - Journal of Lightwave …, 2021 - opg.optica.org
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 …

Femtosecond laser direct writing of optical overpass

X Ding, Y Zhao, A Hassan, Y Sun, Z Hou, W Xue… - Micromachines, 2022 - mdpi.com
With the rapid increase in information density, problems such as signal crosstalk and
crossover restrict the further expansion of chip integration levels and packaging density …

Effect of X-Ray Radiation and High Temperature on Long Period Fiber Gratings in Crystal-Derived Silica Fiber

Q Guo, C Xu, H Li, YB Christy, P Wei… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
A long-period fiber grating (LPFG) in YAG: Yb crystal-derived silica fiber (YCDSF) was
fabricated using a carbon dioxide laser. The influence of X-ray radiation on the resonant …

High Order Resonances in Turning Point Long Period Fiber Grating Fabricated by a Femtosecond Laser

F Shen, H Jiang, H Xia, K Xie… - 2021 IEEE 6th …, 2021 - ieeexplore.ieee.org
Long period fiber grating (LPFG) around the dispersion turning point (DTP) is fabricated with
femtosecond laser direct writing. The fabricated grating exhibits dual resonances in its …