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Photonic band gaps and localization in the Thue–Morse structures

Appl. Phys. Lett. 86, 201110 (2005); doi:10.1063/1.1928317

Published 11 May 2005

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Xunya Jiang, Yonggang Zhang, and Songlin Feng
Institute of Microsystem and Information Technology, CAS, Shanghai 200050, China

Kerwyn C. Huang, Yasha Yi, and J. D. Joannopoulos
Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
Both theoretically and experimentally, we demonstrate that the photonic band gaps in Thue–Morse aperiodic systems can be separated into two flavors, the fractal gaps and the traditional gaps, distinguished by the presence or absence of fractal structure, respectively. The origin of two kind gaps is explained by the different interface correlations. This explanation is confirmed by the gap width behaviors. In addition, the eigenstates near the fractal gaps have a cluster-periodic form, while those near the traditional gaps have the Bloch wavelike form. Our detailed study of these differences is essential for understanding the spectra and light localization in aperiodic systems. ©2005 American Institute of Physics
History: Received 1 November 2004; accepted 16 April 2005; published 11 May 2005
Permalink: http://link.aip.org/link/?APPLAB/86/201110/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.70.Qs
    Photonic bandgap materials
  • YEAR: 2005

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ISSN:
0003-6951 (print)   1077-3118 (online)
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