rectangular

Rectangle Lattice Photonic Crystal with Large Absolute Band Gap at Low Frequency;

在低頻區具有大帶隙的長方晶格二維光子晶體

The rectangle lattice 2D photonic crystal is formed by rectangle grid of dielectric veins and discrete square dielectric rods.

將呈網帶連通的長方網格與呈離散狀態的正方介質柱組合構成長方晶格光子晶體, 用快速平面波展開法計算其能帶結構, 通過參數優化, 在低頻區找到最大絕對禁帶寬度Δω=0 105 6ωe(ωe=2πc/a, a為晶格常數, c為光速), 絕對禁帶中心頻率ωc=0 903 8ωe,Δω/ωc=11 7%。

The modified plane-wave expansion method for calculating quickly the band structure is used to study the band structure in two rectangle lattice 2D photonic crystals.

利用快速平面波展開法研究了兩種長方晶格光子晶體,發現它們在高頻區都存在大帶隙,經參數優化,原胞結構為“工”字形的光子晶體,最大絕對禁帶寬度Δω為0。