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Proceedings Paper

Effect of absorption on photonic band gap
Author(s): San Luo; Kailun Yao; J.Y. Xu; Zuli Liu; Ch. F. Li; L. Zhao
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Paper Abstract

In order to investigate numerically the effect of absorption on the photonic band gap, we consider a one-dimensional (1D) composite photonic crystal composed of alternating layers having complex dielectric constants. We perform calculations on the reflective spectra using the transfer matrix technique for the composite photonic crystal and find that the reflectance depends on material loss tangent Im((epsilon) )/Re((epsilon) ) and the scaled frequency (omega) /(omega) 0. It is shown that the absorption in composite photonic crystal breaks the periodic band structure produced by Bragg reflection in perfect photonic crystal. It pushes stop band-edges down, and raises the bottom of the pass band. The absorption makes the discrete stop bands become gradually a continuous stop band in larger-frequency range as material loss tangent Im((epsilon) )/Re((epsilon) ) increases.

Paper Details

Date Published: 29 October 2001
PDF: 9 pages
Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); doi: 10.1117/12.446607
Show Author Affiliations
San Luo, Huazhong Univ. of Science and Technology and PLA Commanding Communications Academy (China)
Kailun Yao, Huazhong Univ. of Science and Technology and International Ctr. of Materials Physics (China)
J.Y. Xu, PLA Commanding Communications Academy (China)
Zuli Liu, Huazhong Univ. of Science and Technology (China)
Ch. F. Li, PLA Commanding Communications Academy (China)
L. Zhao, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 4595:
Photonic Systems and Applications

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