Title :
Generation of Guiding Modes by Surface Modes in Anisotropic Metamaterial Waveguide
Author_Institution :
Coll. of Optoelectron. Technol., Chengdu Univ. of Inf. Technol., Chengdu, China
Abstract :
We explore the possibility of the existence of guiding modes generated by surface modes in a three-layer waveguide composed of anisotropic single-negative metamaterial. The conditions for generation of even or odd guiding modes are deduced in eight subcases of single-negative (SNG) metamaterials with a different combination of positive or negative components of permittivity and permeability tensors, including the requirements for real propagation of surface and guiding modes as well as a solvable dispersion equation. The theoretical prediction is verified by simulation results, and the generated guiding modes are much more controllable and practicable in the three-layer symmetric waveguide consists of anisotropic SNG metamaterial.
Keywords :
optical metamaterials; optical waveguides; permeability; permittivity; anisotropic metamaterial waveguide; anisotropic single-negative metamaterial; dispersion equation; guiding modes; permeability tensors; permittivity tensors; single-negative metamaterials; surface modes; three-layer symmetric waveguide; Dispersion; Equations; Magnetic materials; Mathematical model; Metamaterials; Optical surface waves; Surface waves; Anisotropic; metamaterial; slow propagation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2273454