Referenced Items are not available for this document.
The rotational invariance of the effective refractive index in the 2-D photonic crystal is discussed. It is proven that, in the case of the n -fold symmetrical ω-k equifrequency surface (EFS), there are two solutions that show the invariance of the effective refractive index after rotating a multiple of the basic repeated angle 2 π/n within the first Brillouin zone. For the noncircular solution, the behavior of the effective refractive index Neff(θ) at normal incidence shows that Neff(0°) has an additional constant of two in the very high symmetric EFS, higher than in the low symmetric case.
Published in:
Photonics Technology Letters, IEEE
(Volume:24
,
Issue:
22
)
Date of Publication: Nov.15, 2012
- Page(s):
- 2070 - 2073
- ISSN :
- 1041-1135
- INSPEC Accession Number:
- 13113033
- Digital Object Identifier :
- 10.1109/LPT.2012.2219616
- Product Type:
- Journals & Magazines
- Date of Publication :
- 28 September 2012
- Date of Current Version :
- 15 November 2012
- Issue Date :
- Nov.15, 2012
- Sponsored by :
- IEEE Photonics Society
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