Band structure of comb-like photonic crystals containing meta-materials

Band structure of comb-like photonic crystals containing meta-materials
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含有超材料的梳状光子晶体的能带结构

DOI:
10.1016/j.optcom.2007.04.049
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发表时间:
2006-09
影响因子:
2.4
通讯作者:
Chen, Hong
Chen, Hong
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Weng, Yi;Wang, Zhi-Guo;Chen, Hong

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在界面响应理论的框架下,研究了由超材料(负折射率材料)构成的梳状光子晶体的透射特性和能带结构。结果表明,在低频处存在一个特殊的带隙。这个间隙不同于布拉格间隙,因为它对几何缩放和无序不敏感。在相同的系统参数下,与正负折射率交替的一维光子晶体的零平均折射率带隙相比,差距明显更深更宽。此外,其间隙边的行为也是不同的。一个间隙边缘由平均介电常数决定,而另一个间隙边缘仅受主干磁导率变化的影响。由于两个间隙边缘的这种不对称性,差距的加宽可以以更大的自由度和便利性来实现。
We study the transmission properties and band structure of comb-like photonic crystals (PC) with backbones constructed of meta-materials (negative-index materials) within the frame of the interface response theory. The result shows the existence of a special band gap at low frequency. This gap differs from the Bragg gaps in that it is insensitive to the geometrical scaling and disorder. In comparison with the zero-average-index gap in one-dimensional PC made of alternating positive- and negative-index materials, the gap is obviously deeper and broader, given the same system parameters. In addition, the behavior of its gap-edges is also different. One gap-edge is decided by the average permittivity whereas the other is only subject to the changing of the permeability of the backbone. Due to this asymmetry of the two gap-edges, the broadening of the gap could be realized with much freedom and facility.
DOI: 10.1103/physrevlett.58.2059
发表时间: 1987-05-18
影响因子: 8.6
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