title: A new structure for enhanced transmission through a two-dimensional metallic grating.
abstract: The spectral response of metallic two-dimensional periodic structures in which circular apertures are engraved has been extensively studied. We show that in such devices transmission can be highly enhanced by partially shutting the central parts of each aperture in order to make a periodic array of subwavelength coaxial structures.
authors.affiliation: Laboratoire d'Optique P.M. Duffieux, CNRS UMR 6603, IMFC FR0067, and Laboratoire de Physique Moléculaire, CNRS UMR 6624, Université de Franche-Comté, Route de Gray, 25030 Besançon Cedex, France.
authors.forename: D
authors.initials: D
authors.lastname: Van Labeke
authors.forename: F I
authors.initials: FI
authors.lastname: Baida
authors.forename: J-M
authors.initials: JM
authors.lastname: Vigoureux