Efficient finite element resolution of gyromagnetic and gyroelectric nonreciprocal electromagnetic problems.


Journal Article

We present a rigorous derivation of the weak-form formulation of the Helmholtz equation for electromagnetic structures incorporating general nonreciprocal, dispersive materials such as magnetized ferrites or magnetized free-carrier plasmas. This formulation allows an efficient self-consistent treatment using finite elements of a variety of problems involving magnetic or magneto-optical materials biased by an external DC field where the eigenmodes become nonreciprocal or even unidirectional. The possibilities of this method are illustrated with several examples of TE-polarized modes at microwave frequencies and TM-polarized modes at optical and infrared wavelengths.

Full Text

Duke Authors

Cited Authors

  • Degiron, A; Vanwolleghem, M; Smith, DR

Published Date

  • May 2017

Published In

Volume / Issue

  • 25 / 10

Start / End Page

  • 11088 - 11102

PubMed ID

  • 28788792

Pubmed Central ID

  • 28788792

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.25.011088


  • eng