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On the unambiguous determination of effective optical properties of periodic metamaterials: a one-dimensional case study
KTH, School of Information and Communication Technology (ICT), Optics and Photonics, Photonics.ORCID iD: 0000-0002-3368-9786
2010 (English)In: JOURNAL OF THE EUROPEAN OPTICAL SOCIETY-RAPID PUBLICATIONS, ISSN 1990-2573, Vol. 5, 10010- p.Article in journal (Refereed) Published
Abstract [en]

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 lambda >> a while at higher frequency the power may be distributed over more branches. This is in particular true near band-edges and strong resonances. Extensions to two- and three-dimensional metamaterial designs are discussed.

Place, publisher, year, edition, pages
2010. Vol. 5, 10010- p.
Keyword [en]
metamaterials, homogenization theory, Bloch waves
National Category
URN: urn:nbn:se:kth:diva-28751DOI: 10.2971/jeos.2010.10010ISI: 000274627800010ScopusID: 2-s2.0-79954990384OAI: diva2:389715
QC 20110120Available from: 2011-01-20 Created: 2011-01-19 Last updated: 2011-01-20Bibliographically approved

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