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Finite element modelling of photonic crystals

Hiett, B.P., Generowicz, J.M., Cox, S.J., Molinari, M., Beckett, D., Parker, G.J. and Thomas, K.S. (2001) Finite element modelling of photonic crystals In, PREP 2001: Third conference on postgraduate research in electronics, photonics, communications and software : 9-11 April 2001,University of Keele, UK. Engineering and Physical Sciences Research Council pp. 87-88.

Record type: Book Section

Abstract

This paper presents an efficient finite element method (FEM) for computing spectra of photonic band gap materials. Such computations have traditionally been approached using plane wave expansion techniques. These have the disadvantages of being expensive in terms of computation and memory. By contrast, the FEM is considerably more efficient due mainly to the fact that the eigensystem matrices are very sparse. Furthermore, FEM operates on a real space representation of the discontinuous dielectric constants. An implementation of the method is described and it is used to compute the band structure for a variety of photonic crystal (PC) geometries. We compare our results with those obtained from other sources, including plane wave expansion techniques, finite difference (FD) methods and experimental data. The performance of the algorithm is also analysed in terms of memory and computational cost.

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More information

Published date: 2001
Organisations: Engineering Sciences

Identifiers

Local EPrints ID: 21947
URI: http://eprints.soton.ac.uk/id/eprint/21947
ISBN: 1899371281
PURE UUID: 115ef34b-0125-43fc-ae89-2308fafe647a

Catalogue record

Date deposited: 25 Jul 2008
Last modified: 17 Jul 2017 16:24

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Contributors

Author: B.P. Hiett
Author: J.M. Generowicz
Author: S.J. Cox
Author: M. Molinari
Author: D. Beckett
Author: G.J. Parker
Author: K.S. Thomas

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