Reflection phase of photonic bands in finite bi-directional 1D photonic crystals using an effective medium approach
Reflection phase of photonic bands in finite bi-directional 1D photonic crystals using an effective medium approach
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DOI：
10.1364/osac.1.000332
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发表时间：
2018-09
期刊：
影响因子：
1.6
通讯作者：
Qiu-ling Zhao;Jing Liu;Dongxiao Gao;Kai You;Xia Wang;H. Leung;Tsz Kit Yung;Ranran Zhang;W. Tam
中科院分区：
文献类型：
--
作者：
Qiu-ling Zhao;Jing Liu;Dongxiao Gao;Kai You;Xia Wang;H. Leung;Tsz Kit Yung;Ranran Zhang;W. Tam
在过去的几十年里，对光子晶体的研究主要集中在能带结构和完全光子带隙上。然而，有限系统中光子能带的性质对于实际应用来说更为重要。本文研究了有限双向一维介质光子晶体中光子带的反射位相，该光子晶体被模拟为具有类Fano色散的有效介质。利用干涉模型对有限个光子晶体平板的反射峰/谷进行了分析，得到了光子晶体带的反射相位。我们表明，我们的模型在光子带中工作得很好，除了离带边很近的地方。我们的工作可以为光子晶体在相位测量和操纵方面的实际应用提供参考。
The studies of photonic crystals had focused on the band structures and complete photonic bandgaps in past decades. However, properties of photonic bands in finite systems are more important for practical applications. Here we report the study of the reflection phase of photonic bands in finite bi-directional 1D dielectric photonic crystal modeled as a dielectric slab using an effective medium with a Fano-like dispersion. The reflection peaks/troughs of the finite photonic crystal slab are analyzed using an interference model to obtain the reflection phase for the photonic bands of the PC. We show that our model works very well in the photonic bands except very close to the band edges. Our work could shed light on practical applications in phase measurements and manipulations using photonic crystals.