Modal analysis for TE volume modes in finite-thickness slab with partly negative permeability tensor component

The modal properties of TE volume mode propagating along a single-negative slab with negative and dispersive component of permeability tensor were demonstrated in this paper. By investigating the dispersion characteristics of the eigenvalues, it has been brought to light that most of the TE modes in this structure have backward wave nature, but some waves in thick slab are the forward wave. Furthermore, by inspecting the modal dependence of this structure as a function of slab thickness, the modes sequentially disappear from the lower order one as the slab thickness becomes thicker. These properties are much similar to those of magnetostatic wave (MSW) in the magnetic substance. So it seems that presented metamaterial composed of the nonmagnetic unit cells works as the magnetic substance.