光子晶体耦合腔波导的色散特性  

The dispersive characteristics of impurity bands in coupled-resonator optical waveguides of photonic crystals

作　　者：冯立娟[1] 江海涛[1] 李宏强[1] 张冶文[1] 陈鸿[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《物理学报》2005年第5期2102-2105,共4页Acta Physica Sinica

基　　金：国家重点基础研究专项经费 (批准号 :2 0 0 1CB610 4);国家自然科学基金 (批准号 :5 0 2 770 2 6);上海市科委;中国航天科技集团专项基金资助的课题 .~~

摘　　要：理论研究表明 ,在基于光子晶体的耦合腔波导中 ,杂质带的色散性质取决于相邻缺陷间局域电磁场的特性 ,而非缺陷间距离的大小 .在第一布里渊区中出现的杂质带的反常色散实际上是能带折叠的结果 .通过计算结构的有效折射率 ,证实了杂质带色散是正常色散 .We found that the dispersive properties of impurity bands in a coupled-resonator optical waveguide based on photonic crystals depend on the properties of the fields localized at the two neighboring defects instead of the distance of the defects. In fact, the seemingly anomalous dispersion of the impurity band in the first Brillouin zone is a result from band folding. After calculating the effective refractive index of the structure, we have verified that the impurity band has a normal dispersion.

关 键 词：光子晶体 耦合腔波导 反常色散 杂质带 

分 类 号：O734[理学—晶体学]