Absolute photonic band gap of the two-dimensional hollow-dielectric triangular-lattice photonic crystals

被引：0
作者：
Feng S. [1 ]
Yang Y. [1 ]
Wang Y. [1 ]
机构：
[1] College of Science, Minzu University of China
来源：
Guangxue Xuebao/Acta Optica Sinica | 2010年 / 30卷 / 04期
关键词：
Absolute band gap; Finite-difference time-domain method; Photonic crystal;
D O I：
10.3788/AOS20103004.1173
中图分类号：
学科分类号：
摘要：
Absolute band gaps of the two-dimensional triangular-lattice photonic crystals consisting of Ge rods are calculated with the finite-difference time-domain method. Through calculating the band structures of the triangular-lattice photonic crystal consisting of hollow circular Ge rods, it is found that the TM-polarized and TE-polarized photonic band gaps can be overlapped, and an absolute photonic band gap can be obtained. A large absolute band gap of 0.074 (2πc/a) can be obtained for the structures with a triangular lattice of hollow triangular Ge rods immersed in air, corresponding to 16.2% of the central frequency.
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页码：1173 / 1177
页数：4
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