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Energy Band Structure and its Characteristics of a Two-Dimensional Metallic Photonic Crystal

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Energy Band Structure and its Characteristics of a Two-Dimensional Metallic Photonic Crystal

Xianfeng Baoaand Duanzheng Yaoa,b

aDepartment of Physics, Wuhan University, Wuhan 430072, China

bKey Laboratory of Acoustic and Photonics Material and Devices, Ministry of Education, Wuhan University, Wuhan 430072, China

Reprint requests to D. Y.; Fax: 86 27 68752569; E-mail: dzyao@whu.edu.cn

Z. Naturforsch.66a,339 – 344 (2011); received September 28, 2010 / revised November 30, 2010 The energy band structure and its characteristics of a two-dimensional metallic photonic crystal with square lattice structure have been studied by using the finite-difference time-domain (FDTD) algorithm. In order to determine the band structure accurately, the spatial distribution of the eigen- function has been analyzed. By comparing the distribution of different wave vectors and of different energy band eigenmodes, an effective method to determine the band structure was found, which has been verified by the simulation results.

Key words:Metallic Photonic Crystal; FDTD; Eigenmode; Band Structure.

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