Comparing guided modal properties of surface waves along single- and double-negative indexed slab waveguides

Abstract

The guided dispersion characteristics of the fundamental symmetric and asymmetric modes of surface waves along single- and double-negative indexed slab waveguides are investigated, and a comparative analysis made when varying the single- and double-negative permittivity and permeability. While the values of the permittivity and permeability of the slab region are varied to obtain a salient picture of the guided dispersion characteristics, identical absolute product values are used for both slab cases to facilitate a reasonable comparison. In particular, in common ranges where guided mode solutions coexist for both the single- and double-negative indexed slabs, the guided mode characteristics are similar with a lower normalized frequency regime, indicating that the sign of the material parameters has a negligible effect, whereas the characteristics become quite different as the normalized frequency increases. Some other anomalous guided dispersion properties are also discussed and compared with previously reported results.

Electrodynamical Characteristic Particularity of Open Metamaterial Square and Circular Waveguides

“…It is interesting to note that the authors of [6][7][8][9][10][11][12] indicated that transverse TE m , TM m and surface modes can only propagate in the examined 1D and 2D isotropic and uniaxial anisotropic metamaterial waveguides. It means that the longitudinal components of EM waves are equal to zero.…”

“…The calculations were fulfilled for lossless materials. In [7], dispersion characteristics of the 1D slab waveguides of lossless DPS and DNG materials were investigated and compared. In the article, the T M m modes with m = 0, 1, 2 .…”

“…Articles in which the most consistently investigated metamaterial waveguides can be presented [6][7][8][9][10][11][12]. In [6], theoretical analysis of two layered 1D slab waveguides when materials have the constitutive parameters with signs of all combinations, i.e., with negative real permittivity, but positive real permeability (epsilon-negative (ENG)); with negative real permeability, but positive real permittivity (mu-negative (MNG)); with both negative real permittivity and permeability (double-negative (DNG)), and conventional material with both positive real permittivity and permeability (double-positive (DPS)) are presented.…”

Microwave Scattering and Absorption by a Multilayered Lossy Metamaterial --- Glass Cylinder

“…Many papers have reported the theoretical and experience development of metamaterials [12][13][14][15][16][17][18][19]. The variety of technologies for creation of engineering metamaterials increases rapidly.…”

“…In our work the double negative (DN) metamaterial is defined by values s 1 = s 2 = s 3 = s 4 = −1; double positive (DP) material [13] is determined by values s 1 = s 2 = s 3 = s 4 = 1; single negative metamaterial (SN) is defined by values s 1 = s 2 = 1,…”