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A variational calculation of TE and TM cutoff wavenumbers in circular eccentric guides by conformal mapping
Author(s) -
Yang Hyunkieu,
Lee Sangseol
Publication year - 2001
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10041
Subject(s) - cutoff , conformal map , wavenumber , mathematical analysis , cutoff frequency , finite element method , mathematics , physics , microwave , computational physics , geometry , optics , quantum mechanics , thermodynamics
The cutoff wavenumbers of higher order modes in circular eccentric guides are computed with the variational analysis combined with a conformal mapping. A conformal mapping is applied to the variational formulation, and the variational equation is solved by the finite‐element method. Numerical results for TE and TM cutoff wavenumbers are presented for different distances between the centers and ratio of the radii. Comparisons with numerical results found in the literature validate the presented method. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 31: 381–384, 2001.