基于光子晶体波导定向耦合的光子晶体分/合频器  

Photonic crystals multi/demultiplexer based on photonic crystals waveguide directional coupling

作　　者：朱志宏[1] 叶卫民[1] 季家镕[1] 袁晓东[1] 曾淳[1] 张晚云[1] 

机构地区：[1]国防科技大学光子声子研究中心,湖南长沙410073

出　　处：《光学技术》2004年第4期417-419,422,共4页Optical Technique

摘　　要：在完整二维光子晶体中引入线缺陷后,就形成了光子晶体波导。将时域有限差分法(FDTD)和平面波法作为光子晶体理论研究的工具。研究结果表明,光子晶体波导之间的耦合遵循普通介质波导耦合的一般规律,有定向耦合的功能;将两个具有不同耦合长度的光子晶体波导定向耦合器顺序集成在一起,可以组成一个三波长的光子晶体分/合频器。Photonic crystals coupling waveguide are developed when line defects are introduced into photonic crystals. The finite-difference time-domain(FDTD) method and plane wave method are developed for analyzing the 2-D square lattice photonic crystals. Results indicate: photonic crystals waveguide coupling follows general regulation of conventional dielectric waveguide coupling. There-wavelengths can be multi/demultiplexed by using two photonic crystals directional couplers which are connected sequentially.

关 键 词：光子晶体 时域有限差分 定向耦合 分/合频器 

分 类 号：TN256[电子电信—物理电子学]