An averaged-field approach for obtaining the band structure of a dielectric photonic crystal
- 13 December 1999
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 12 (2), 99-112
- https://doi.org/10.1088/0953-8984/12/2/301
Abstract
An averaged-field approach is suggested for obtaining the explicit form of the dispersion equation for electromagnetic waves propagating in a three- or two-dimensional dielectric photonic crystal when the dimension of the inclusions is small compared with the longest period of the rectangular lattice of the photonic crystal. The band structure is obtained in an explicit and simple way. The method is verified numerically by comparing with the conventional plane-wave expansion method for a special case.Keywords
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