Open AccessPolymer optical fiber Bragg grating inscription with a single Nd:YAG laser pulse
Author(s) -
Luís Pereira,
Rui Min,
Xuehao Hu,
Christophe Caucheteur,
Ole Bang,
B. Ortega,
Carlos Marques,
Paulo Antunes,
João Pinto
Publication year - 2018
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.26.018096
Subject(s) - fiber bragg grating , materials science , optics , fiber laser , phosfos , laser , core (optical fiber) , optical fiber , optoelectronics , plastic optical fiber , graded index fiber , photonic crystal fiber , fiber optic sensor , wavelength , physics , composite material
We experimentally demonstrate the first polymer optical fiber Bragg gratings inscribed with only one Nd:YAG laser (266 nm) pulse. The gratings have been inscribed in a single-mode poly (methyl methacrylate) optical fiber, with a core doped with benzyl dimethyl ketal for photosensitivity enhancement. One laser pulse with a duration of 8 ns and energy of 72 µJ is adequate to introduce a refractive index change of 0.5 × 10 -4 in the fiber core. The stability of the gratings has been confirmed and the strain and temperature sensitivity measurements demonstrate their tunable properties.