二维光子晶体波导和微腔缺陷态研究

Study two dimensional photonic crystal waveguides and defect state of micro-cavity

利用二维三角晶格及正方晶格介质柱光子晶体TE偏振的禁带与介质柱半径的变化关系,分析了二维光子晶体缺陷态的分布。根据光子晶体波导间的耦合作用,计算其耦合长度设计合理的定向耦合器。通过分析波导与微腔的耦合特性,选取不同的传输方向,可以设计多种基于光子晶体波导与微腔耦合的波分复用系统。

The paper studied the relation between two dimensional triangular lattice and square lattice photonic crystal band gap for TE polarization and dielectric cylinder radius,and studied distribution of two dimensional photonic crystal defect state.According the principle of photonic crystal waveguides,the coupling length is calculated,designed a reasonable directional coupler.Based on the coupling between waveguide and cavity,different transmission directions is selected,we can design a variety of WDM system for coupling between photonic crystal waveguide and micro-cavity.