PBG structures of novel two-dimensional annular photonic crystals with triangular lattice

被引:4
作者
Zhang Y. [1 ]
Kong L. [1 ]
Feng Z. [1 ]
Zheng Z. [1 ]
机构
[1] School of Physics and Opto-Electronics Technology, Fujian Normal University
关键词
Dielectric Constant; Photonic Crystal; Optimal Sample; Triangular Lattice; Filling Ratio;
D O I
10.1007/s11801-010-9187-3
中图分类号
学科分类号
摘要
The photonic band gap (PBG) structures of four types of annular photonic crystals (PCs) with inner-scatter of rectangular, square, hexagonal and circle shapes are respectively calculated by the plane wave expansion method. The optimal samples with the largest gap-midgap ratio for each structure are obtained by scanning the four parameters: filling ratio f, dielectric constant e{open}1, rotating angle θ of inner-scatters and outside radius R of the air ring. The results show that the band gap can be further maximized by adjusting the structural parameters, and a wide PBG with the gap-midgap ratio of 20.4% is gained in the annular photonic crystal with rectangular inner-scatters. © 2010 Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.
引用
收藏
页码:281 / 283
页数:2
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