Diode-like asymmetric transmission of circularly polarized waves

被引：31
|
作者：
Liu, Dao-Ya [1 ]
Yao, Li-Fang [1 ]
Zhai, Xiao-Min [1 ]
Li, Min-Hua [1 ]
Dong, Jian-Feng [1 ]
机构：
[1] Ningbo Univ, Inst Opt Fiber Commun & Network Technol, Ningbo 315211, Zhejiang, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2014年 / 116卷 / 01期
基金：
中国国家自然科学基金;
关键词：
STRONG OPTICAL-ACTIVITY; CHIRAL METAMATERIAL; ROTATION;
D O I：
10.1007/s00339-014-8519-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Optical diode plays an important role in optical computing and information processing. In this paper, a kind of three-layered chiral metamaterial is proposed to achieve diode-like asymmetric transmission for forward and backward propagations of circularly polarized electromagnetic waves only. The metamaterial is composed of a ring-chain structure sandwiched between two identical S-shaped metallic layers with their corresponding substrates. A transparent transmission at normal incidence in one direction and a small intensity of transmission in the opposite direction are numerically demonstrated in this chiral structure. Besides, the results reveal that the bandwidth of the cross-polarization transmission of this designed structure can be tuned by varying the incident angle of circularly polarized waves.
引用
收藏
页码：9 / 13
页数：5
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