Journal article
On the unambiguous determination of effective optical properties of periodic metamaterials: a one-dimensional case study
Structured Electromagnetic Materials, Department of Photonics Engineering, Technical University of Denmark1
Department of Photonics Engineering, Technical University of Denmark2
Solid Mechanics, Department of Mechanical Engineering, Technical University of Denmark3
Department of Mechanical Engineering, Technical University of Denmark4
Electromagnetic Systems, Department of Electrical Engineering, Technical University of Denmark5
Department of Electrical Engineering, Technical University of Denmark6
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.
| Language: | English |
|---|---|
| Publisher: | European Optical Society |
| Year: | 2010 |
| ISSN: | 19902573 |
| Types: | Journal article |
| DOI: | 10.2971/jeos.2010.10010 |
| ORCIDs: | Mortensen, Asger , Sigmund, Ole and Breinbjerg, Olav |
