Virtual Antenna Method as Applied to the Study of the Scattering by 2-dimensional Non-linear Metamaterials
We are interested in the electromagnetic scattering by a finite set of parallel nonlinear rods (optical Kerr-effect, for instance) of any shape. Associated with perfectly matched layers, the Finite Element Method (FEM) is well suited for this kind of problems. Nevertheless, when using the FEM, the sources have to be put inside the meshed area; it is then clear that this method fails whenever the sources are far from the obstacles (for instance, when dealing with plane waves). In this paper, a new route for obtaining the scattered field by non-linear obstacles is proposed. The basic idea consists in simulating the real incident field by a virtual field emitted by an appropriate antenna, located in the meshed domain, and encompassing or lying above the obstacles. This general procedure is of course adapted to the diffraction by non-linear metamaterials. Some results are given in order to illustrate the versatility of our method: transmission through a finite Kerr photonic crystal, Kerr gratings, etc.... We check the numerical results via a verification of the power balance.
Frédéric Zolla Pierre Godard André Nicolet
Institut Fresnel,Marseille,France
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
1204-1207
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）