利用在单线缺陷结构中引入两个附加的相邻介质柱构成一种新型的光子晶体慢光波导结构，并且详细研究了平移缺陷边界介质柱以及改变缺陷内附加的相邻介质柱间距对器件性能的影响。结果表明：与平移缺陷边界介质柱相比，通过改变缺陷内附加的相邻介质柱间距可以获得更好的慢光特性，即在保持有效带宽基本不变的情况下，将光群速度降低到0.03c（c为真空下的光速）。

A novel slow light photonic crystal waveguide is proposed by introducing two additional adjacent holes into the single line-defect structure. Influences of the boundary row shifts and the additional holes′ distance on the device performances are investigated in detail. Compared with the boundary row shifts method, a better slow light property can be obtained by modifying the distance of two additional adjacent holes. Numerical results demonstrate that the group velocity is reduced to 0.03c (c is the light velocity in vacuum) under nearly the same operational bandwidth.