FDTD Modeling of a Cloak with a Nondiagonal Permittivity Tensor. (4th June 2012)

• Record Type: Journal Article
• Authors: Okada, Naoki; Cole, James B.
• Other Names: Danner A. Academic Editor.; Midrio M. Academic Editor.; Tervonen A. Academic Editor.
• Is Part Of: ISRN optics. Volume 2012(2012)
• Publication Date: 2012-06-04
• Subjects: Optics -- Periodicals; Optics; Periodicals; 535
• DOI: 10.5402/2012/536209
• Languages: English
• ISSNs: 2090-7826

Abstract

Abstract : We demonstrate a finite-difference time-domain (FDTD) modeling of a cloak with a nondiagonal permittivity tensor. Numerical instability due to material anisotropies is avoided by mapping the eigenvalues of the material parameters to a dispersion model. Our approach is implemented for an elliptic-cylindrical cloak in two dimensions. Numerical simulations demonstrated the stable calculation and cloaking performance of the elliptic-cylindrical cloak.