On the unambiguous determination of effective optical properties of periodic metamaterials: a one-dimensional case study

Asger Mortensen, Min Yan, Ole Sigmund, Olav Breinbjerg

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We show how branch ambiguities in the extraction of effective parameters is arising as a direct consequence of the underlying Bloch state physics. The mutual importance of the different branches in general depends on the experimental context, and we show how the Fourier spectrum of the field inside the metamaterial can be used to access this. Different numerical examples illustrate how a predominant branch may be identified for l a while at higher frequency the power may be distributed over more branches. This is in particular true near bandedges and strong resonances. Extensions to two- and three-dimensional metamaterial designs are discussed.
Original languageEnglish
JournalEuropean Optical Society
Volume5
Pages (from-to)10010
ISSN1990-2573
DOIs
Publication statusPublished - 2010

Keywords

  • Bloch waves
  • homogenization theory
  • metamaterials

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