Confined Metamaterial Structures Based on Coordinate Transformations

B. Vasić, R. Gajić Institute of Physics, Pregrevica 118, P.O. Box 68, 11080 Belgrade, Serbia

G. Isić School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom

and K. Hingerl Zentrum für Oberflächen- und Nanoanalytik und Universität Linz, Altenbergerstr. 69, A-4040 Linz, Austria

Full Text PDF

We apply transformation optics to structures in which the electromagnetic field is confined by highly conducting coatings. The possibility of changing the field propagation direction without perturbation is demonstrated on the example of a waveguide bend. Using this approach it is also possible to reshape a confined structure in order to meet certain external requirements and to redistribute a field in order to obtain desired field distribution. The structure implementation implies replacing a part of given confined structure with a metamaterial designed using the technique of transformation optics. Simplification of structure realization based on using reduced set of material parameters is examined. Our theoretical considerations are confirmed by full wave finite element simulations of a waveguide bend.

DOI: 10.12693/APhysPolA.116.96 PACS numbers: 03.50.De, 41.20.Jb, 42.70.-a