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Broadband wave plate based on one-dimensional photonic crystal containing negative-zero-positive index metamaterials
Optics Communications ( IF 2.2 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.optcom.2020.126449
Xinglin Wang , Huisheng Wang , Hanwei Yu

Abstract The spectra, the phase shifts, and the phase difference between TE and TM waves upon reflection from a one-dimensional photonic crystal (1D PC) containing negative-zero-positive index metamaterials (NZPIMs) have been investigated. It is found that there exist a zero- n gap and a dirac point (DP) band gap, which can be adjusted by the incident angle, the thickness ratio, and the scaling factor. Furthermore, the reflection phase shifts of TE and TM waves within the two gaps change smoothly with increasing the frequency, and the phase differences could remain constant in rather wide frequency range, which can be conveniently tuned by the incident angles, the thickness ratio, and the scaling factor. Our results show that such a new 1D PC containing NZPIMs can serve as a wave plate using in wide spectral band, and suggest the analogous phenomena of valence electron in graphene superlattice.

中文翻译:

基于负零正折射率超材料的一维光子晶体宽带波片

摘要 研究了包含负-零-正折射率超材料 (NZPIM) 的一维光子晶体 (1D PC) 反射时 TE 波和 TM 波之间的光谱、相移和相位差。发现存在零-n带隙和狄拉克点(DP)带隙,可以通过入射角、厚度比和比例因子进行调整。此外,TE和TM波在两个间隙内的反射相移随着频率的增加而平滑变化,相位差可以在相当宽的频率范围内保持恒定,可以通过入射角、厚度比和比例因子。我们的结果表明,这种包含 NZPIM 的新型 1D PC 可以用作在宽光谱带中使用的波片,
更新日期:2021-01-01
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