A general semianalytical method for computing the propagation characteristics of radially inhomogeneous cylindrical dielectric waveguides

Qianru Weng*, Sichen Pan, Chujie Lu

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A general and simple semianalytical method based on the Galerkin procedure is introduced in this letter for wave propagation problems related to radially inhomogeneous cylindrical dielectric waveguides with arbitrary permittivity profiles. The complicated wave propagation problem in an inhomogeneous waveguide is transformed into a simple problem of solving an equivalent matrix in terms of the Galerkin procedure. Eigenvalue solutions are given for three kinds of representative radially inhomogeneous cylinders to verify the generality of the proposed semianalytical method. The accuracy and the improvement of the convergency are illustrated by comparing the calculated results with those obtained by the analytical method or the matrix numerical method.

Original languageEnglish
Pages (from-to)1657-1663
Number of pages7
JournalMicrowave and Optical Technology Letters
Volume63
Issue number6
DOIs
Publication statusPublished - 2021
Externally publishedYes

Keywords

  • cylindrical dielectric waveguides
  • eigenvalues
  • Galerkin method
  • inhomogeneous medium
  • semianalytical method

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