Open AccessPlanar Bragg grating in bulk Polymethylmethacrylate
Author(s) -
M. Rosenberger,
Georg Koller,
Stefan Belle,
Bernhard Schmauß,
Ralf Hellmann
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.027288
Subject(s) - optics , materials science , grating , fiber bragg grating , ultrasonic grating , blazed grating , planar , refractive index , holographic grating , waveguide , phosfos , acousto optics , laser , diffraction grating , bragg's law , phase (matter) , optoelectronics , wavelength , diffraction , physics , optical fiber , fiber optic sensor , computer graphics (images) , polarization maintaining optical fiber , quantum mechanics , computer science
We report on a one-step writing process of a planar waveguide including a Bragg grating structure in bulk Polymethylmethacrylate (PMMA). A KrF excimer laser and a phase mask covered by an amplitude mask were used to locally increase the refractive index in PMMA and thereby generate simultaneously the planar waveguide and the Bragg grating. Our results show a reflected wavelength of the Bragg grating of about 1558.5 nm in accordance to the phase mask period. The reflectivity of the grating is about 80%. Initial characteristics of the Bragg grating structure towards humidity are investigated.