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Characteristic band gap structures of high dielectric contrast photonic crystals

Published online by Cambridge University Press:  07 September 2011

Sheng D. Chao  and
Hsin Y. Peng
Sheng D. Chao
Affiliation:
Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan
Hsin Y. Peng
Affiliation:
Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan
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Abstract

Conventional photonic crystals exhibit low-lying full band gaps for the dielectric contrast smaller than 15. As the dielectric contrast increases, the band gap patterns change characteristics and exhibit interesting properties. In particular, the dispersion curves near the band gap region become concentrated to the middle band frequencies and exhibit an overall red shift in frequency. For a dielectric column photonic crystal made of a hexagonal lattice of circular cylinders, the maximum full band gap was found at the dielectric contrast as high as 27.5, which is attainable by using ceramics materials. The gap opens at high-lying bands, has simultaneous TM and TE band edges, and exhibit flattened dispersion curves near the band edges.

Keywords

crystaldielectric propertiesoptical properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1343: Symposium W – Recent Progress in Metamaterials and Plasmonics , 2011 , mrss11-1343-w04-05
Copyright
Copyright © Materials Research Society 2011

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References

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