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首页> 外文期刊>Physica, B. Condensed Matter >Wave propagation in double-period quasi-regular one-dimensional photonic crystals composed of single-negative metamaterials
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Wave propagation in double-period quasi-regular one-dimensional photonic crystals composed of single-negative metamaterials

机译：由单负超材料构成的双周期准规则一维光子晶体中的波传播

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摘要

In this paper, we theoretically study the propagation of electromagnetic waves in one-dimensional double-period quasi-regular structures consisting of negative-permittivity and negative-permeability metamaterials. A Drude-type dispersive response for both permittivity and permeability of single-negative metamaterials is considered. From the numerical results performed by transfer matrix method and effective medium theory, it is found that double-period photonic crystals can exhibit an omnidirectional gap at given microwave frequency. Such an omnidirectional gap is insensitive to incident angle and polarization, and is invariant upon the change of scale length. It is also found that this gap exists in all double-period sequences, and it is independent of structure sequence. Moreover, electromagnetic field distributions in this structures show that the fields are localized at each interface of two media. These results can lead to further applications of quasi-regular structures.
机译：本文从理论上研究了电磁波在由负介电常数和负磁导率超材料组成的一维双周期准规则结构中的传播。考虑了单负超材料的介电常数和磁导率的Drude型色散响应。通过传递矩阵法和有效介质理论的数值结果，发现在给定的微波频率下，双周期光子晶体可以表现出全向间隙。这样的全向间隙对入射角和偏振不敏感，并且在标尺长度的变化上不变。还发现该间隙存在于所有双周期序列中，并且与结构序列无关。而且，这种结构中的电磁场分布表明，这些场位于两种介质的每个界面处。这些结果可以导致准规则结构的进一步应用。

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