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An inverse scattering method is used to design single-mode planar optical waveguides. Waveguides with wider cores compared with those designed by direct scattering methods are obtained, and a numerical example is given.
The objective of this research is to develop an electromagnetic model for analyzing complex media and multifunctional radio frequency (RF) systems. The emphasis of this project is to use available analytical techniques to complement the complex numerical simulations which are often called for in these large-scale electromagnetic analyses problems. An FDTD… (More)
Retrieval of the bianisotropic metamaterial The retrieval methods to compute the effective permittivity and permeability of metamaterials published so far deal with isotropic permittivity and permeability. However, it is known already that the metamaterials are intrinsically anisotropic because of the orientations of the rings and rods in space, and that… (More)
Study and characterization of left-handed metamaterials Many of the basic properties of left-handed (LH) media are in constrast to those typically encountered in right-handed media. For example, using a rigourous plane wave analysis of propagation and transmission into a dispersive LH medium from a RH medium, we show that power refracts at a negative angle,… (More)
—Inverse scattering algorithms for reconstructing the physical properties of sea ice from scattered electromagnetic field data are presented. The development of these algorithms has advanced the theory of remote sensing, particularly in the microwave region, and has the potential to form the basis for a new generation of techniques for recovering sea ice… (More)