Open AccessLong-period fiber grating sensors fabrication at high-frequency carbon dioxide laser pulses
Author(s) -
J. F. Rojas,
Sandra Valencia,
Jorge Montoya-Cardona,
Juan Galvis,
Nelson D. Gómez-Cardona
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1547/1/012005
Subject(s) - materials science , grating , optics , long period fiber grating , fiber bragg grating , fiber optic sensor , optoelectronics , fiber laser , laser , optical fiber , fiber , polarization maintaining optical fiber , wavelength , composite material , physics
In this work, long-period fiber grating sensors are written by using a point to point technique based on the thermal shock of focused high-frequency carbon dioxide laser pulses at several kilohertz. The thermal response of each long-period fiber grating was characterized by using a Peltier module based control system. The average sensitivity of the sensor was calculated to be ∼ 0.079 nm/°C. The used technique facilitates to obtain compact and sturdy long-period fiber gratings, with low insertion loss and low-level back reflection.