Title :
Dispersion Characteristics of Asymmetric Channel Plasmon Polariton Waveguides
Author :
Hussain, Firas Faeq K. ; Heikal, A.M. ; Hameed, Mohamed Farhat O. ; El-Azab, Jala ; Abdelaziz, Wessameldin S. ; Obayya, Salah S. A.
Author_Institution :
Eng. Applic. of Lasers Dept., Cairo Univ., Cairo, Egypt
Abstract :
A novel asymmetric channel plasmon polaritons (CPPs) is proposed and analyzed. In this paper, the dispersion characteristics of asymmetric two and three-trenched CPPs structures are studied in detail. The suggested asymmetric structures have advantages in terms of propagation length and figure of merit over the symmetric CPP waveguides. In addition, a comparative study of various CPP metals including gold and silver is also presented. It is found that the propagation length and figure of merit of the silver-based structures are better than those of gold-based structures. In addition, the effect of bending on the asymmetric CPP waveguides is investigated. The simulation results are obtained by full-vectorial finite difference method with irregular meshing capabilities and perfectly matched layer boundary conditions.
Keywords :
bending; finite difference methods; gold; light propagation; optical dispersion; optical waveguides; polaritons; silver; Ag; Au; asymmetric channel plasmon polariton waveguides; asymmetric three-trenched channel plasmon polariton structures; asymmetric two-trenched channel plasmon polariton structures; bending; dispersion characteristics; full-vectorial finite difference method; gold-based structures; matched layer boundary condition; propagation length; silver-based structures; Dispersion; Gold; Indexes; Optical waveguides; Plasmons; Plasmonic; asymmetric channel waveguide; finite difference method;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2014.2320700
