TE-mode coplanar imaging using weakly anisotropic metasurface

Opt Express. 2013 Jul 29;21(15):17531-8. doi: 10.1364/OE.21.017531.

Abstract

We analyze and experimentally realize coplanar imaging of transverse-electric (TE) modes surface waves using weakly anisotropic metasurface consisting of non-periodic subwavelength U-shaped metallic structures. Such metallic structures with the exciting coplanar dipole are integrated on the top surface of a thin dielectric board. A circuit model is utilized to analyze the characteristics of the surface waves supported by the metasurface. By varying the geometrical parameters of the U-shaped metallic structures, the phases of surface waves are modulated, from which a planar lens is presented for the TE-mode coplanar imaging. The analyses and measurements show that anisotropies of the U-shaped metallic structures have little influence on the imaging properties of the planar lens. The measurement results have good agreements to numerical simulations.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Computer Simulation
  • Computer-Aided Design
  • Electromagnetic Fields*
  • Equipment Design
  • Equipment Failure Analysis
  • Lenses*
  • Light
  • Models, Theoretical*
  • Refractometry / instrumentation*
  • Scattering, Radiation