Full-wave parallel dispersive finite-difference time-domain modeling of three-dimensional electromagnetic cloaking structures
arXiv:0903.4204 · doi:10.1016/j.jcp.2009.06.026
Abstract
A parallel dispersive finite-difference time-domain (FDTD) method for the modeling of three-dimensional (3-D) electromagnetic cloaking structures is presented in this paper. The permittivity and permeability of the cloak are mapped to the Drude dispersion model and taken into account in FDTD simulations using an auxiliary differential equation (ADE) method. It is shown that the correction of numerical material parameters and the slow switching-on of source are necessary to ensure stable and convergent single-frequency simulations. Numerical results from wideband simulations demonstrate that waves passing through a three-dimensional cloak experience considerable delay comparing with the free space propagations, as well as pulse broadening and blue-shift effects.
References in corpus (14)
- Optical Cloaking with Non-Magnetic Metamaterials
- Full-wave simulations of electromagnetic cloaking structures
- Calculation of material properties and ray tracing in transformation media
- Transformation media that rotate electromagnetic fields
- Optical design of reflectionless complex media by finite embedded coordinate transformations
- Confirmation of Cylindrical Perfect Invisibility Cloak Using Fourier-Bessel Analysis
- Electromagnetic cloaking by layered structure of homogeneous isotropic materials
- Design and analytically full-wave validation of the invisibility cloaks, concentrators, and field rotators created with a general class of transformations
- Magnifying perfect lens and superlens design by coordinate transformation
- Full-wave finite-difference time-domain simulation of electromagnetic cloaking structures
- Coordinate transformation based design of confined metamaterial structures
- Time delays and energy transport velocities in three dimensional ideal cloaking
- Accurate Modelling of Left-Handed Metamaterials Using Finite-Difference Time-Domain Method with Spatial Averaging at the Boundaries
- A Rigorous Time-Domain Analysis of Full--Wave Electromagnetic Cloaking (Invisibility)