Existing conditions of full bandgaps and absolute negative refraction in metallic-dielectric photonic crystal
Dong Jian-Wen(董建文)a), Hu Xin-Hua(胡新华)b), and Wang He-Zhou(汪河洲)a)†
a State Key Laboratory of Optoelectronic Materials and Technologies, Zhongshan (Sun Yat-Sen) University, Guangzhou 510275, China; b Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
Abstract This paper has theoretically studied the characteristic frequencies of band structures in two-dimensional metallic-dielectric photonic crystals. It is demonstrated that a large filling fraction benefits the existence of absolute photonic band gap, while a smaller filling fraction benefits an absolute negative refraction band. In addition, it also finds that the relation between the cut-off frequency of E-polarized wave and the filling fraction exceeding 10% is content with a linear increasing function, whose coefficients are exponential to the normalized lattice constant. These investigations have significant implications for tuning the operational frequencies to desired applications and manufacturing photonic crystals.
Received: 13 May 2006
Revised: 25 July 2006
Accepted manuscript online:
Fund: Project supported
by
the National 973 (Grant No~2004CB719804) and the National Natural Science
Foundation of China.
Cite this article:
Dong Jian-Wen(董建文), Hu Xin-Hua(胡新华), and Wang He-Zhou(汪河洲) Existing conditions of full bandgaps and absolute negative refraction in metallic-dielectric photonic crystal 2007 Chinese Physics 16 1057
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