A new method to find full complex roots of a complex dispersion equation for light propagation. (arXiv:1109.0879v1 [physics.comp-ph])

A new method to find full complex roots of a complex dispersion equation for light propagation. (arXiv:1109.0879v1 [physics.comp-ph]):
A new numerical method is presented to find full complex roots of a complex
dispersion equation. For the application of the solution, the complex
dispersion equation of a cylindrical metallic nanowire is investigated. By
using this method, locus of Brewster angle, complex dispersion curves of
Surface Plasmon Polaritons (SPPs) and complex bulk modes can be obtained in
once calculation. Approximate analytical solution to the complex dispersion
equation has also been derived to verify our method.