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

作　　者：张亚茹 孔令凯 冯卓宏 郑志强 

机构地区：[1]School of Physics and Opto-Electronics Technology,Fujian Normal University

出　　处：《Optoelectronics Letters》2010年第4期281-283,共3页光电子快报（英文版）

基　　金：supported by the Natural Science Foundation of Fujian Province (No. A0510014);the Technology Grants of Fujian Province(No. 2006F5025)

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 ε1,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.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 ε1,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.

关 键 词：光子带隙结构 光子晶体 三角晶格 环形 二维 结构比例 平面波展开 介电常数 

分 类 号：O481[理学—固体物理]