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Proceedings Article

Infrared spectral filtering based on guided-mode resonance structure

[+] Author Affiliations
E. Sakat

ONERA - The French Aerospace Lab. (France) and Lab. de Photonique et Nanostructures, CNRS (France)

G. Vincent, R. Haïdar

ONERA - The French Aerospace Lab. (France)

P. Ghenuche, N. Bardou, S. Collin, F. Pardo, J.-L. Pelouard

Lab. de Photonique et Nanostructures, CNRS (France)

Proc. SPIE 8424, Nanophotonics IV, 842414 (April 30, 2012); doi:10.1117/12.922563
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From Conference Volume 8424

  • Nanophotonics IV
  • Brussels, Belgium | April 16, 2012

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.

© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

E. Sakat ; G. Vincent ; P. Ghenuche ; N. Bardou ; S. Collin, et al.
"Infrared spectral filtering based on guided-mode resonance structure", Proc. SPIE 8424, Nanophotonics IV, 842414 (April 30, 2012); doi:10.1117/12.922563; http://dx.doi.org/10.1117/12.922563


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