Light transmission by subwavelength square coaxial aperture arrays in metallic films.
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.
Moreau
A
A
Granet
G
G
Baida
F
F
Van Labeke
D
D