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
收藏
页码：1788 / 1792
页数：5
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