Abstract

Two-dimensional electromagnetic cloaking devices with infinite optic constants at the inner boundary are investigated. Numerical simulations of this class of ideal cloak, performed with the transmission line modeling method, confirm the fundamental importance of such extreme values in the efficiency of the cloak in some situations. This is illustrated by using the concept of the anticloak, which was shown to be capable of defeating the non-ideal cloak. We numerically show that the presence of a layer with extreme constitutive parameters renders the anticloak unable to produce its effect. Furthermore, we propose a simple theoretical model that leads to the same conclusion if the cloak is slightly dissipative.

© 2009 Optical Society of America

Response of dispersive cylindrical cloaks to a nonmonochromatic plane wave

Cédric Blanchard, Bae-Ian Wu, Jorge Andrés Portí, Hongsheng Chen, Baile Zhang, Juan Antonio Morente, and Alfonso Salinas
J. Opt. Soc. Am. B 26(11) 2117-2124 (2009)

Time domain simulation of electromagnetic cloaking structures with TLM method

Cédric Blanchard, Jorge Portí, Bae-Ian Wu, Juan Antonio Morente, Alfonso Salinas, and Jin Au Kong
Opt. Express 16(9) 6461-6470 (2008)

Cylindrical electromagnetic concentrator with only axial constitutive parameter spatially variant

Kuang Zhang, Qun Wu, Jia-Hui Fu, and Le-Wei Li
J. Opt. Soc. Am. B 28(6) 1573-1577 (2011)

Cloak/anti-cloak interactions

Giuseppe Castaldi, Ilaria Gallina, Vincenzo Galdi, Andrea Alù, and Nader Engheta
Opt. Express 17(5) 3101-3114 (2009)

Exact analytical approaches for elliptic cylindrical invisibility cloaks

E. Cojocaru
J. Opt. Soc. Am. B 26(5) 1119-1128 (2009)