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Proceedings Paper

Infrared spectral filtering based on guided-mode resonance structure
Author(s): E. Sakat; G. Vincent; P. Ghenuche; N. Bardou; S. Collin; F. Pardo; J.-L. Pelouard; R. Haïdar
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Paper Abstract

We present the experimental study of a new design of band-pass filter based on guided-mode resonances in a free-standing metal-dielectric structure with subwavelength gratings. Component consists of a subwavelength gold grating with narrow slits deposited on a silicon nitride membrane. High optical transmission is measured with up to 78% transmission at resonance. Experimental angularly resolved spectra are presented: they reveal the role of the diffracted orders and of the waveguide eigenmode in the resonance. Spectra have a typical profile of Fano resonances: we show that this profile is due to interferences between a direct transmission channel through the 0th order, and an indirect transmission channel which results from the excitation by the ±1 diffracted orders of a waveguide eigenmode.

Paper Details

Date Published: 30 April 2012
PDF: 7 pages
Proc. SPIE 8424, Nanophotonics IV, 842414 (30 April 2012); doi: 10.1117/12.922563
Show Author Affiliations
E. Sakat, ONERA - The French Aerospace Lab. (France)
Lab. de Photonique et Nanostructures, CNRS (France)
G. Vincent, ONERA - The French Aerospace Lab. (France)
P. Ghenuche, Lab. de Photonique et Nanostructures, CNRS (France)
N. Bardou, Lab. de Photonique et Nanostructures, CNRS (France)
S. Collin, Lab. de Photonique et Nanostructures, CNRS (France)
F. Pardo, Lab. de Photonique et Nanostructures, CNRS (France)
J.-L. Pelouard, Lab. de Photonique et Nanostructures, CNRS (France)
R. Haïdar, ONERA - The French Aerospace Lab. (France)


Published in SPIE Proceedings Vol. 8424:
Nanophotonics IV
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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