Open AccessFree-standing guided-mode resonance band-pass filters: from 1D to 2D structures
Author(s) -
Emilie Sakat,
Grégory Vincent,
Petru Ghenuche,
Nathalie Bardou,
Christophe Dupuis,
Stéphane Collin,
Fabrice Pardo,
Riad Haïdar,
Jean-Luc Pélouard
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.20.013082
Subject(s) - guided mode resonance , optics , grating , materials science , transmission (telecommunications) , dielectric , resonance (particle physics) , rotation (mathematics) , diffraction grating , extraordinary optical transmission , refractive index , optical filter , transmission coefficient , band pass filter , rigorous coupled wave analysis , physics , optoelectronics , surface plasmon polariton , surface plasmon , plasmon , telecommunications , geometry , mathematics , particle physics , computer science
We study experimentally and theoretically band-pass filters based on guided-mode resonances in free-standing metal-dielectric structures with subwavelength gratings. A variety of filters are obtained: polarizing filters with 1D gratings, and unpolarized or selective filters with 2D gratings, which are shown to behave as two crossed-1D structures. In either case, a high transmission (up to ≈ 79 %) is demonstrated, which represents an eight-fold enhancement compared to the geometrical transmission of the grating. We also show that the angular sensitivity strongly depends on the rotation axis of the sample. This behavior is explained with a detailed description of the guided-mode transmission mechanism.