Vol. 130

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2012-08-23

Controlling the Electromagnetic Field by Indefinite Media with Extremely Strong Anisotropy

By Jingbo Sun, Tieyu Sun, Bo Li, Helen Lai Wa Chan, Ji Zhou, and Yu Wang
Progress In Electromagnetics Research, Vol. 130, 513-524, 2012
doi:10.2528/PIER12071813

Abstract

In this work, we show how to manipulate the electromagnetic wave at will by using an indefinite medium with extremely strong anisotropy. The negative element in the indefinite permittivity tensor goes to the negative infinity while the positive element is equal to 1, which stretches the hyperbolic equifrequency contour into a straight line type. The direction of the Poynting vector and the wave vector is aligned by the straight line type equifrequency contour along the orientation of the extremely negative permittivity, thus control the wave propagation. The other permittivity of 1 makes the indefinite medium matched with the air. Moreover, because of the hyperbolic equifrequency contour, evanescent wave can also transmit in the indefinite medium under the propagation mode, implying the possibility of controlling an evanescent wave by this special indefinite medium. Simulations are performed to demonstrate the controlling performance and a potential design to realize such a medium by metamaterial with multilayered metal/dielectric structure. This work may supply a shortcut for those former devices based on the Transformation optics.

Citation


Jingbo Sun, Tieyu Sun, Bo Li, Helen Lai Wa Chan, Ji Zhou, and Yu Wang, "Controlling the Electromagnetic Field by Indefinite Media with Extremely Strong Anisotropy," Progress In Electromagnetics Research, Vol. 130, 513-524, 2012.
doi:10.2528/PIER12071813
http://www.jpier.org/PIER/pier.php?paper=12071813

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