Open AccessBroad dual-band asymmetric transmission of circular polarized waves in near-infrared communication band
Author(s) -
Deng Fei Tang,
Chuan Wang,
Wei Pan,
Min Hua Li,
Jian Dong
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.011329
Subject(s) - polarizer , optics , metamaterial , terahertz radiation , circular polarization , multi band device , physics , transmission (telecommunications) , infrared , polarization (electrochemistry) , linear polarization , optoelectronics , telecommunications , laser , chemistry , birefringence , computer science , antenna (radio) , microstrip
In this paper, a three-layered chiral metamaterial is proposed to achieve broad dual-band and high magnitude asymmetric transmission (AT) in near-infrared communication band for circularly polarized waves. The asymmetric parameter reaches to 0.9/0.86 at 174/235 THz, over 0.6 in broad dual bands from 160 to 183 THz and from 220 to 245 THz. Remarkably, the AT effect of circularly and linearly polarized waves can be modulated to appear or vanish with variants of the G shapes that has not been found in previous reports. The proposed structure shows great potential applications in high performance multi-band circular and linear polarizers.