Multiband unidirectional cloaking based on geometric optics

Author

Ran Duan ; Semouchkina, Elena

Author_Institution

Dept. of Phys., Michigan Technol. Univ., Houghton, MI, USA

fYear

2014

fDate

6-11 July 2014

Firstpage

2220

Lastpage

2221

Abstract

A unidirectional transmission cloak composed of transparent prisms is proposed to provide invisibility of objects with dimensions substantially exceeding the wavelengths of incident radiation. Instead of accelerating waves inside the cloak medium to avoid detectable wave front distortions beyond the cloak, as metamaterial based cloaks do, the designed cloak provides the uniformity of wave phases by delaying the wave phase in the cloak medium by multiple of 2π versus wave phase in free space. The efficiency of the cloaking effect is confirmed by appearance of multiband drops in the simulated spectra of the total scattering cross-width of the cloaked objects.

Keywords

distortion; electromagnetic metamaterials; geometrical optics; invisibility cloaks; accelerating waves; cloak medium; cloaking effect efficiency; detectable wavefront distortions; geometric optics; incident radiation wavelengths; metamaterial based cloaks; multiband unidirectional cloaking; scattering cross-width; simulated spectra; transparent prisms; unidirectional transmission cloak; Dielectrics; Lenses; Metals; Metamaterials; Optical diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE

Conference_Location

Memphis, TN

ISSN

1522-3965

Print_ISBN

978-1-4799-3538-3

Type

conf

DOI

10.1109/APS.2014.6905437

Filename

6905437