Omnidirectional gap and defect mode of one-dimensional photonic crystals containing negative-index materials
Omnidirectional gap and defect mode of one-dimensional photonic crystals containing negative-index materials
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DOI：
10.1063/1.1637452
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发表时间：
2003-12-29
影响因子：
4
通讯作者：
Zhu, SY
中科院分区：
文献类型：
--
作者：
Jiang, HT;Chen, H;Zhu, SY
我们从理论上证明了含有负折射率材料的一维光子晶体具有全方向带隙，这是由于零（体积）平均折射率的机制。与布拉格间隙相反，这种零（n）过条间隙的边缘对入射角和偏振不敏感。当引入杂质时，在零（n）过栅隙内出现缺陷模，其对入射角的依赖性很弱，且不随标度变化。(C)2003年，美国物理学会。
We show theoretically that a one-dimensional photonic crystal containing a negative-index material has an omnidirectional gap, owing to the mechanism of zero (volume) averaged refractive index. In contrast to the Bragg gap, the edge of such a zero-(n) over bar gap is insensitive to incident angle and polarization. When an impurity is introduced, a defect mode appears inside the zero-(n) over bar gap with a very weak dependence on incident angle and invariant with scaling. (C) 2003 American Institute of Physics.