Open AccessSimultaneous control of polarization and amplitude over broad bandwidth using multi-layered anisotropic metasurfaces
Author(s) -
Jeong-Geun Yun,
Jaeyong Sung,
Sun-Je Kim,
Byoungho Lee
Publication year - 2018
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.26.029826
Subject(s) - optics , amplitude , polarization (electrochemistry) , amplitude modulation , broadband , anisotropy , phase modulation , materials science , bandwidth (computing) , polarization rotator , physics , optoelectronics , frequency modulation , birefringence , phase noise , telecommunications , chemistry , computer science
In this paper, the broadband transmissive modulation of polarization and amplitude is demonstrated with high efficiency and tunability using multi-layered aluminum metasurfaces. Broadband and nondispersive optical rotation in the optical frequency region is realized by using Fabry-Pérot-like cavity and phase compensation. Simultaneously, the transmission amplitude can be independently controlled by adjusting the twist angle of the anisotropic metasurfaces. The proposed polarization-amplitude modulators are numerically demonstrated to achieve large tunability with an amplitude modulation depth of 0.95 and maximum rotation angle of 180°.