Absolute band gaps of a two-dimensional triangular-lattice dielectric photonic crystal with different shapes

被引：2

作者：

Feng Shuai ^{[1
]}

Yang YuPing ^{[1
]}

Lan ChuWen ^{[1
]}

Bai ZhenZhen ^{[1
]}

Wang YiQuan ^{[1
]}

机构：

[1] Minzu Univ China, Sch Sci, Beijing 100081, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2010年 / 53卷 / 10期

基金：

中国国家自然科学基金;

关键词：

photonic crystal; absolute band gap; triangular lattice; RODS;

D O I：

10.1007/s11433-010-4098-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Absolute band gaps of a two-dimensional triangular-lattice photonic crystal are calculated with the finite-difference time-domain method in this paper. Through calculating the photonic band structures of the triangular-lattice photonic crystal consisting of Ge rods immersed in air with different shapes, it is found that a large absolute band gap of 0.098 (2c/a) can be obtained for the structures with hollow triangular Ge rods immersed in air, corresponding to 19.8% of the middle frequency. The influence of the different factors on the width of the absolute band gaps is also discussed.

引用

页码：1788 / 1792

页数：5

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