Abstract

A systematic study on a generalized compensated bilayer structure is presented based on transformation optics. A compensated bilayer can be constructed through a general transformation plus a coordinate inversion based on a single layer in the electromagnetic (EM) space. Two outer boundaries of the obtained bilayer are mapped from the same surface. Such a bilayer has an optically zero volume (nihility) regardless of the material composition in the original single layer. This fact directly leads to the property of invariant scattering. A bilayer is also able to transfer the EM field from one side to the other with a scaling factor, which is determined by how the two side boundaries are mapped. For a properly chosen background, it is possible to achieve perfect optical imaging. Extensive numerical examples are given to demonstrate these identified properties and applications. Our study provides a more complete understanding of this class of transformation media by considering general geometries and arbitrary material properties.

© 2009 Optical Society of America

Fourier optics theory for invisibility cloaks

Kedi Wu, Qiluan Cheng, and Guo Ping Wang
J. Opt. Soc. Am. B 28(6) 1467-1474 (2011)

Design of a homogeneous-material cloak and illusion devices for active and passive scatterers with multi-folded transformation optics

Hamza Ahmad Madni, Naila Aslam, Shahid Iqbal, Shuo Liu, and Wei Xiang Jiang
J. Opt. Soc. Am. B 35(10) 2399-2404 (2018)

Equivalent configurations of optical transformation media

Tungyang Chen, Shen-Wen Cheng, and Chung-Ning Weng
Opt. Express 17(23) 21326-21335 (2009)

Generalized transformation for nonmagnetic invisibility cloak with minimized scattering

Lujun Huang, Daming Zhou, Jian Wang, Zhifeng Li, Xiaoshuang Chen, and Wei Lu
J. Opt. Soc. Am. B 28(4) 922-928 (2011)

Exact analytical approaches for elliptic cylindrical invisibility cloaks

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