Open AccessDual-band asymmetric optical transmission of both linearly and circularly polarized waves using bilayer coupled complementary chiral metasurface
Author(s) -
Wenbing Liu,
Wei Wu,
Lirong Huang,
Yonghong Ling,
Chunfa Ba,
Shuang Li,
Zenghui Chun,
Hanhui Li
Publication year - 2019
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.27.033399
Subject(s) - optics , metamaterial , circular polarization , bilayer , coupling (piping) , physics , chirality (physics) , linear polarization , waveplate , elliptical polarization , multi band device , optoelectronics , transmission (telecommunications) , extraordinary optical transmission , materials science , plasmon , telecommunications , surface plasmon polariton , surface plasmon , microstrip , symmetry breaking , membrane , laser , chiral symmetry breaking , computer science , biology , genetics , quantum mechanics , nambu–jona lasinio model , metallurgy , antenna (radio)
It is highly desirable to develop asymmetric transmission (AT) devices for both linearly and circularly polarized light. However, currently existing metamaterial-based AT devices require multi-step micro-nano fabrication processes and usually realize AT responses only for linearly or circularly polarized waves, not simultaneously for both. We here propose a dual-band AT device for both linearly and circularly polarized waves in the near-infrared region by using a bilayer coupled complementary chiral metasurface, which includes a half-gammadion-shape gold (Au) structural layer and its Babinet's complimentary copy. Unlike other multilayer AT devices working at optical frequencies, it takes less micro-nano fabrication steps. Besides, with the help of chirality and the inherent near-field coupling effect between the two complementary Au layers, the maximal AT parameters for linearly and circularly polarized waves can reach up to 0.45 and 0.56, respectively. The underlying mechanisms of dual-band AT responses are also investigated in depth from the perspectives of chirality and coupling effect. Our work offers a new and simple approach to high-performance AT devices, helps to better understand near-filed coupling effect in coupled complementary metasurfaces, and also expands their application fields.