Open AccessBragg gratings in a few mode microstructured polymer optical fiber in less than 30 seconds
Author(s) -
Ricardo Oliveira,
Lúcia Bilro,
Rogério N. Nogueira
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.010181
Subject(s) - fiber bragg grating , materials science , optics , phosfos , photonic crystal fiber , optical fiber , optoelectronics , microstructured optical fiber , long period fiber grating , refractive index , plastic optical fiber , fiber optic sensor , wavelength , physics
We report the inscription of a Bragg grating in an undoped polymethylmethacrylate based microstructured fiber in a time record. The fiber has been irradiated with a 248 nm ultraviolet radiation, through the phase mask technique using low fluence and low repetition rate. The experimental conditions were chosen to modify the core refractive index of the fiber at the incubation regime and avoiding polymer ablation. The peak reflection of the Bragg grating was centered in the infrared region with 20 dB reflection and 0.16 nm bandwidth. These spectral properties are well attractive for sensors and communications applications.