Eliminating spurious modes in finite-element waveguide problems by using divergence-free fields

22 May 1986

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 22 (11) , 569-570
https://doi.org/10.1049/el:19860387

Abstract

Spurious solutions in the finite-element analysis of the modes of waveguides and optical fibres are completely eliminated by the use of fields which are exactly divergence-free. Such fields are themselves computed by the finite-element method.

Keywords

DIVERGENCE-FREE FIELDS
SPURIOUS SOLUTIONS ELIMINATION
FINITE-ELEMENT WAVEGUIDE PROBLEMS
OPTICAL FIBRES
FINITE-ELEMENT ANALYSIS
SPURIOUS MODES ELIMINATION

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