Open AccessCharacterization and modeling of Bragg gratings written in polymer fiber for use as filters in the THz region
Author(s) -
Shihua Zhou,
L. Reekie,
Hau Ping Chan,
Y. T. Chow,
Philip Chung,
Kwai Man Luk
Publication year - 2012
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.20.009564
Subject(s) - fiber bragg grating , optics , materials science , phosfos , long period fiber grating , photonic crystal fiber , terahertz radiation , grating , wavelength , fiber , optoelectronics , optical fiber , plastic optical fiber , fiber optic sensor , physics , composite material
We demonstrate fiber Bragg gratings written in polymer fiber for use in the THz window for the first time. A KrF excimer laser operating at 248 nm was used to inscribe notch-type gratings in single component Topas subwavelength fiber. A transmission loss at the centre wavelength of the grating of 60 dB is observed in short gratings containing only 192 notches. Experimental results and modeling are presented. The gratings are expected to find use in THz signal filtering and chemical or biosensing applications.