Open AccessGeometric optics-based multiband cloaking of large objects with the wave phase and amplitude preservation
Author(s) -
Ran Duan,
Elena Semouchkina,
Ravi Pandey
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.027193
Subject(s) - cloak , cloaking , optics , metamaterial , reflection (computer programming) , physics , transformation optics , phase (matter) , amplitude , wavelength , geometrical optics , physical optics , computer science , quantum mechanics , programming language
The geometric optics principles are used to develop a unidirectional transmission cloak for hiding objects with dimensions substantially exceeding the incident radiation wavelengths. Invisibility of both the object and the cloak is achieved without metamaterials, so that significant widths of the cloaking bands are provided. For the preservation of wave phases, the λ-multiple delays of waves passing through the cloak are realized. Suppression of reflection losses is achieved by using half-λ multiple thicknesses of optical elements. Due to periodicity of phase delay and reflection suppression conditions, the cloak demonstrates efficient multiband performance confirmed by full-wave simulations.