Open AccessTE-mode coplanar imaging using weakly anisotropic metasurface
Author(s) -
Xiang Wan,
Xiao Peng Shen,
Tie Jun Cui
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.017531
Subject(s) - optics , planar , materials science , anisotropy , surface wave , transverse plane , lens (geology) , dielectric , dipole , optoelectronics , physics , computer graphics (images) , structural engineering , quantum mechanics , computer science , engineering
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.