Open AccessBroadband unidirectional cloak designed by eikonal theory
Author(s) -
Xuan Li,
Xiaojia Wu,
Luoning Zhang,
Jing Zhou
Publication year - 2015
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.23.028402
Subject(s) - cloak , eikonal equation , broadband , optics , eikonal approximation , cloaking , physics , phase (matter) , metamaterial , scattering , quantum mechanics
A method for designing optical device is derived based on the eikonal theory, which could obtain the eikonal distribution on a curved surface according to the propagation characteristics of the subsequent light wave. Then combining with the phase matching condition, we designed a broadband unidirectional cloak. Different from the reported unidirectional cloaks, the proposed one could be used for coherent wave and has continuous broadband performance. Moreover, it has three cloaked regions. Full-wave simulation results verify the properties of the cloak.