中国物理B ›› 2021, Vol. 30 ›› Issue (11): 114216-114216.doi: 10.1088/1674-1056/ac16d2

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Multi-band asymmetric transmissions based on bi-layer windmill-shaped metamaterial

Ying-Hua Wang(王英华)1,†, Jie Li(李杰)2, Zheng-Gao Dong(董正高)3, Yan Li(李妍)1, and Xu Zhang(张旭)1   

  1. 1 School of Physics and Physical Engineering, Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Qufu Normal University, Qufu 273165, China;
    2 Grünberg Research Centre, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    3 School of Physics, Southeast University, Nanjing 211189, China
  • 收稿日期:2021-04-19 修回日期:2021-07-18 接受日期:2021-07-22 出版日期:2021-10-13 发布日期:2021-11-03
  • 通讯作者: Ying-Hua Wang E-mail:wyh121@qfnu.edu.cn
  • 基金资助:
    Project supported by the National Youth Foundation of China (Grant Nos. 11904200 and 11704219), the National Natural Science Foundation of China (Grant No. 11774053), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20190726), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 18KJD140004), NJUPT-SF (Grant No. NY218099), and the Opening Project of the Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology (Grant No. hxkj2019007).

Multi-band asymmetric transmissions based on bi-layer windmill-shaped metamaterial

Ying-Hua Wang(王英华)1,†, Jie Li(李杰)2, Zheng-Gao Dong(董正高)3, Yan Li(李妍)1, and Xu Zhang(张旭)1   

  1. 1 School of Physics and Physical Engineering, Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Qufu Normal University, Qufu 273165, China;
    2 Grünberg Research Centre, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    3 School of Physics, Southeast University, Nanjing 211189, China
  • Received:2021-04-19 Revised:2021-07-18 Accepted:2021-07-22 Online:2021-10-13 Published:2021-11-03
  • Contact: Ying-Hua Wang E-mail:wyh121@qfnu.edu.cn
  • Supported by:
    Project supported by the National Youth Foundation of China (Grant Nos. 11904200 and 11704219), the National Natural Science Foundation of China (Grant No. 11774053), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20190726), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 18KJD140004), NJUPT-SF (Grant No. NY218099), and the Opening Project of the Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology (Grant No. hxkj2019007).

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摘要： This study proposes a bi-layer windmill-shaped metamaterial that consists of resonators, with similar shapes, on both sides of a dielectric substrate. In this study, the second layer is rotated clockwise around the substrate normal at 90° and thereafter flipped in the first layer. Due to the introduction of a windmill-like shape, the resonant structures result in new resonant modes and thus can achieve multi-band high-efficiency cross-polarization conversions and asymmetric transmissions (ATs) for a linearly polarized incident plane wave with a maximum asymmetric parameter of 0.72. Depending on the geometric parameters of our windmill-shaped structures, the AT effects can be flexibly modulated in a broad multi-band from 160 THz to 400 THz, which has not been reported in previous studies. These outstanding AT effects provide potential applications in optical diodes, polarization control switches, and other nano-devices.

关键词: metamaterial, multi-band, asymmetric transmission, polarization conversion

Abstract: This study proposes a bi-layer windmill-shaped metamaterial that consists of resonators, with similar shapes, on both sides of a dielectric substrate. In this study, the second layer is rotated clockwise around the substrate normal at 90° and thereafter flipped in the first layer. Due to the introduction of a windmill-like shape, the resonant structures result in new resonant modes and thus can achieve multi-band high-efficiency cross-polarization conversions and asymmetric transmissions (ATs) for a linearly polarized incident plane wave with a maximum asymmetric parameter of 0.72. Depending on the geometric parameters of our windmill-shaped structures, the AT effects can be flexibly modulated in a broad multi-band from 160 THz to 400 THz, which has not been reported in previous studies. These outstanding AT effects provide potential applications in optical diodes, polarization control switches, and other nano-devices.

Key words: metamaterial, multi-band, asymmetric transmission, polarization conversion

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
42.25.Ja (Polarization) 42.79.Ci (Filters, zone plates, and polarizers) 81.05.Xj (Metamaterials for chiral, bianisotropic and other complex media)