Optical source transformations.

Published

Journal Article

Transformation optics is a recently appreciated methodology for the design of complex media that control the propagation of electromagnetic and other types of waves. The transformation optical technique involves the use of coordinate transformations applied to some region of space, providing a conceptual means to redirect the flow of waves. Successfully designed devices to date have made use of transformations acting on passive space only; however, the technique can also be applied when source distributions (e.g., current and charge) are included within the space being transformed. In this paper we present examples of source transformations that illustrate the potential of these expanded transformation optical methods. In particular, using finite-element full-wave simulations, we confirm the restoration of dipole radiation patterns from both a distorted 'pin-wheel' antenna and a bent dipole partially occluded by a cylindrical scatterer. We propose the technique of source transformations as a powerful approach for antenna design, especially in relation to conformal antennas.

Full Text

Duke Authors

Cited Authors

  • Kundtz, N; Roberts, DA; Allen, J; Cummer, S; Smith, DR

Published Date

  • December 2008

Published In

Volume / Issue

  • 16 / 26

Start / End Page

  • 21215 - 21222

PubMed ID

  • 19104551

Pubmed Central ID

  • 19104551

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.16.021215

Language

  • eng