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

2010 ◽  
Vol 18 (4) ◽  
Author(s):  
K. Kim ◽  
Y. Cho
Keyword(s):  
Surface Waves ◽  
Negative Permittivity ◽  
Double Negative ◽  
Dispersion Characteristics ◽  
Slab Waveguides ◽  
Normalized Frequency ◽  
Guided Mode ◽  
Permittivity And Permeability ◽  
Frequency Regime ◽  
Mode Characteristics

AbstractThe 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.

Refractometric sensor based on slab waveguides of simultaneously negative permittivity and permeability materials

2020 ◽  
Vol 52 (12) ◽  
Author(s):  
Sofyan A. Taya ◽  
Nael Doghmosh ◽  
Zaher M. Nassar ◽  
Murugan Senthil Mani Rajan ◽  
Dhasarathan Vigneswaran
Keyword(s):  
Negative Permittivity ◽  
Slab Waveguides ◽  
Permittivity And Permeability

ELECTROMAGNETIC GUIDED WAVES IN A METAMATERIAL-MAGNETIC WAVEGUIDE STRUCTURE

2011 ◽  
Vol 25 (32) ◽  
pp. 4543-4551 ◽  
Author(s):  
H. M. MOUSA ◽  
M. M. SHABAT
Keyword(s):  
Guided Waves ◽  
Waveguide Structure ◽  
Negative Permittivity ◽  
Physical Parameters ◽  
Dispersion Characteristics ◽  
Permittivity And Permeability ◽  
Magnetic Waveguide ◽  
And Behavior

The growing and rapid interest in new artificial metamaterials, whose properties differ from the normal materials has motivated further investigations. The metamaterials have simultaneously negative permittivity and permeability. In this work, we have demonstrated theoretically the existence and behavior of the TE guided waves in a ferromagnetic/metamaterial/antiferromagnetic waveguide structure. The dispersion characteristics are performed for different kinds of metamaterials. The existence and the type of the solutions to the guided waves with respect to different physical parameters are also investigated and discussed. It has been shown that the metamaterials can lead to different, new unusual properties.

Random copper/yttrium iron garnet composites with tunable negative electromagnetic parameters prepared by in situ synthesis

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 61155-61160 ◽  
Author(s):  
Kai Sun ◽  
Zi-dong Zhang ◽  
Run-hua Fan ◽  
Min Chen ◽  
Chuan-bing Cheng ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Yttrium Iron Garnet ◽  
In Situ Synthesis ◽  
Negative Permittivity ◽  
Synthesis Process ◽  
Yttrium Iron ◽  
Permittivity And Permeability ◽  
Frequency Regime ◽  
Iron Garnet

In this paper, the tunable negative permittivity and permeability of copper/yttrium iron garnet (Cu/YIG) composites, which were prepared by in situ synthesis process, were investigated in the radio frequency regime.

Nonlinear TE surface waves in a ferrite slab bounded by Kerr-type metamaterials

2017 ◽  
Vol 26 (03) ◽  
pp. 1750028 ◽  
Author(s):  
Burhan Zamir ◽  
Rashid Ali
Keyword(s):  
Boundary Conditions ◽  
Surface Waves ◽  
Transverse Electric ◽  
Dispersion Relations ◽  
Double Negative ◽  
Propagation Characteristics ◽  
Special Cases ◽  
Tangential Field ◽  
Effective Wave ◽  
Ferrite Slab

In this paper, nonlinear transverse electric surface waves in a structure consisting of a ferrite slab sandwiched between a Kerr-type double-negative metamaterial (DNG-MTM) have been investigated. In addition to a DNG-MTM, two special cases with nonlinear single-negative metamaterials (SNG-MTMs) have also been discussed. The dispersion relations are obtained by applying the boundary conditions to the tangential field components of each layer. The propagation characteristics are plotted numerically for the effective wave index versus propagation frequency.

Fundamental properties of surface waves in lossless stratified structures

2010 ◽  
Vol 466 (2120) ◽  
pp. 2447-2469 ◽  
Author(s):  
Guido Valerio ◽  
David R. Jackson ◽  
Alessandro Galli
Keyword(s):  
Surface Waves ◽  
Dispersion Equation ◽  
High Frequency ◽  
Low Frequency ◽  
Layered Structures ◽  
Graphical Solution ◽  
Fundamental Properties ◽  
The Past ◽  
Permittivity And Permeability ◽  
Constitutive Parameters

This paper is focused on dispersive properties of lossless planar layered structures with media having positive constitutive parameters (permittivity and permeability), possibly uniaxially anisotropic. Some of these properties have been derived in the past with reference to specific simple layered structures, and are here established with more general proofs, valid for arbitrary layered structures with positive parameters. As a first step, a simple application of the Smith chart to the relevant dispersion equation is used to prove that evanescent (or plasmonic-type) waves cannot be supported by layers with positive parameters. The main part of the paper is then focused on a generalization of a common graphical solution of the dispersion equation, in order to derive some general properties about the behaviour of the wavenumbers of surface waves as a function of frequency. The wavenumbers normalized with respect to frequency are shown to be always increasing with frequency, and at high frequency they tend to the highest refractive index in the layers. Moreover, two surface waves with the same polarization cannot have the same wavenumber at a given frequency. The low-frequency behaviours are also briefly addressed. The results are derived by means of a suitable application of Foster’s theorem.

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