Journal
OPTIK
Volume 164, Issue -, Pages 171-177Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2018.03.003
Keywords
Metamaterial; Polarization; Diode-like; Asymmetric transmission
Categories
Funding
- National Natural Science Foundation of China [61475079]
- K.C. Wong Magna Fund in Ningbo University
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We propose a kind of three-layered metamaterial which can realize ultra-broad band diode-like asymmetric transmission (AT) of linearly polarized waves and almost 90 cross polarization rotation in the optical region. Numerical results reveal that the AT amplitude enables to achieve the maximum of 0.97 and surpass 0.8 ranging from 124 to 244 THz for linearly polarized waves. Two layers of sub-wavelength gratings and a split-ring resonator in the middle of the two dielectric substrates form the three-layered structure. We believe that our work will offer a new opportunity in many optical applications of optical devices such as polarization rotators and diode-like devices. (C) 2018 Elsevier GmbH. All rights reserved.
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