Generalized compensated bilayer structure from the transformation optics perspective
2009 (English)In: Journal of the Optical Society of America. B, Optical physics, ISSN 0740-3224, Vol. 26, no 12, B39-B49 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2009. Vol. 26, no 12, B39-B49 p.
negative refractive-index, cloak, metamaterials, invisibility, frequencies, light
IdentifiersURN: urn:nbn:se:kth:diva-19011ISI: 000272389800008ScopusID: 2-s2.0-73849084721OAI: oai:DiVA.org:kth-19011DiVA: diva2:337058
QC 201005252010-08-052010-08-052010-11-02Bibliographically approved