Open AccessUltrabroadband Design for Linear Polarization Conversion and Asymmetric Transmission Crossing X- and K- Band
Author(s) -
Linbo Zhang,
Peiheng Zhou,
Haiyan Chen,
Haipeng Lu,
Haiyan Xie,
En Li,
Jianliang Xie,
Longjiang Deng
Publication year - 2016
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep33826
Subject(s) - broadband , polarization (electrochemistry) , optics , metamaterial , linear polarization , planar , bandwidth (computing) , physics , transmission (telecommunications) , optoelectronics , materials science , telecommunications , computer science , chemistry , laser , computer graphics (images)
In this work, a high-efficiency and broadband reflective converter using ultrathin planar metamaterial (MM) composed of single-layered SRR is firstly realized. Numerical and experimental results demonstrate that the cross-polarization conversion reflectance above 0.84 is achieved from 8.6 to 18.6 GHz for linearly polarized (LP) incident waves under normal incidence. Subsequently, a multi-layered MM based on SRR enables a dramatic improvement of the recently demonstrated asymmetric transmission (AT) effect. Theoretical and measured results present that strong one-way transmission of two orthogonally polarized waves crossing C- and K- band has been observed. These two separated AT pass-bands have a function of selective polarization filter, which can be switched on/off by changing the polarization state of incident waves. The physical mechanisms are elucidated by taking advantage of electric fields and current distributions. Considering the broad bandwidth and the dual band, we believe that these two structures will be beneficial for designing polarization-controlled and selective transmission converter.