Authors: H Shi X Dong Y Lv C Du
Publish Date: 2009/03/13
Volume: 95, Issue: 2, Pages: 345-350
Abstract
We propose a physical understanding of scattering by subwavelength grooves surrounding a single perfect conductor slit based on the superposition of a cylindrical traveling surface wave and a standing surface wave The collective reflection coefficient was introduced to handle the multiinteraction of the surface wave between subwavelength grooves and a slit–grooves focusing structure was designed to demonstrate its validity In comparison to numerical simulations by the finite difference time domain method the proposed method proves effective in describing the multiinteraction behavior of a surface wave and in further refining the phase perturbation at the grooves’ exits
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