Open AccessThe light filtering and guiding properties of high finesse phase resonant compound gratings
Author(s) -
Igor Bendoym,
Andrii B. Golovin,
David T. Crouse
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.20.022830
Subject(s) - finesse , optics , waveguide , phase (matter) , materials science , dispersion (optics) , resonance (particle physics) , grating , diffraction grating , refractive index , excitation , guided mode resonance , physics , fabry–pérot interferometer , laser , particle physics , quantum mechanics
Phase resonances in compound gratings are studied in the frequency and time domains, with the gratings having two dissimilar grooves within the unit cell that each support waveguide cavity modes that couple. Described in this work are the dependence of the phase resonances' Q on the degree of difference between the grooves in the unit cell, their optical properties, a closed-form expression describing their dispersion, their excitation, and the extraction of energy from the phase resonances into free space and into a waveguide. Application to optical filters and corrugated surface antennas are discussed.