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Opt Express. 2003 May 19;11(10):1131-6.

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.

PMID:
19465978
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