title: Analysis of long-range surface plasmon polaritons in nonlinear plasmonic waveguides using pseudospectral method.
abstract: A full-vectorial pseudospectral method is reported for solving the mode characteristics of nonlinear dielectric and plasmonic waveguides. The coupled equations are formulated in terms of transverse magnetic-field components, and self-consistent solutions are obtained through an iterative procedure. The proposed scheme applies in a saturable medium with biaxial anisotropy of practical interest. The accuracy and efficiency of this scheme are demonstrated by solving the mode bistability of a nonlinear dielectric optical waveguide, analyzed by the well-known finite-element-method-based imaginary-distance beam propagation method. Furthermore, the relationship between geometry and input power is studied by analyzing the power dispersion curve of the long-range surface plasmon polariton modes of a nonlinear plasmonic waveguide.
authors.affiliation: Department of Physics and Institute of Nanoscience, National Chung Hsing University, Taichung 40227, Taiwan. cch@phys.nchu.edu.tw
authors.forename: Chia-Chien
authors.initials: CC
authors.lastname: Huang
mesh_terms: D000465:Algorithms; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D017711:Nonlinear Dynamics; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*