A Perturbation Method for Complex Root Finding of Nonlinear Electromagnetic Waves


Aspects of the perturbation method are presented and implemented on the analytic function of the complex variable for the propagation of nonlinear electromagnetic surface guided by a thin film. The behavior of nonlinear TE waves guided by asymmetrical dielectric thin film, bounded by a generalizes nonlinear substrate with a permittivity of the form ɛ ∼ | E |δ is analyzed. The complex roots, which correspond to the propagation and attenuation coefficient are obtained and discussed.

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Shabat, M.M., Abd-El naby, M.A., Barakat, N.M. et al. A Perturbation Method for Complex Root Finding of Nonlinear Electromagnetic Waves. International Journal of Infrared and Millimeter Waves 20, 1389–1402 (1999). https://doi.org/10.1023/A:1021783029924

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  • Nonlinear TE waves
  • Lossy waveguides
  • Numerical and perturbations techniques