二维三维混杂及准三维嵌套复式光子晶体带隙研究

提出了由两套晶格嵌套组成的全新二维/三维混杂及准三维嵌套复式周期光子晶体结构,并通过理论计算获得了带隙位置主要取决于外周期晶格常量,内周期有助于获得超窄禁带的新型带隙特性.这种内外结构周期效应同时发挥带隙调制作用的性质是该类嵌套复式结构所特有.从理论上验证了嵌套结构利用小尺寸周期调制大波长禁带的可行性.

Theoretical Investigation on Photonic Bandgap of 2D/3D Nesting and Pseudo 3D Nesting Complex-period Photonic Crystals

The photonic bandgap of some new 2D/3D and pseudo 3D nesting complex-period structures are theoretically investigated.The calculation indicates that the range of bands are mostly adjusted by outside-period structure,and it is the inside-period structure that leads to super narrow photonic band.The property that the outside and inside period structure affect the band together only belongs to nesting complex-period structures.The results validate that the band can be adjusted by much little period structure.