title: Light transmission by subwavelength square coaxial aperture arrays in metallic films.
abstract: Using the Fourier modal method, we study the enhanced transmission exhibited by arrays of square coaxial apertures in a metallic film. The calculated transmission spectrum is in good agreement with FDTD calculations. We show that the enhanced transmission can be explained when we consider a few guided modes of a coaxial waveguide.
authors.forename: A
authors.initials: A
authors.lastname: Moreau
authors.forename: G
authors.initials: G
authors.lastname: Granet
authors.forename: F
authors.initials: F
authors.lastname: Baida
authors.forename: D
authors.initials: D
authors.lastname: Van Labeke