An ultrathin twist-structure polarization transformer based on fish-scale metallic wires

作者:Han, Jin; Li, Hongqiang*; Fan, Yuancheng; Wei, Zeyong; Wu, Chao; Cao, Yang; Yu, Xing; Li, Fang; Wang, Zhanshan
来源:Applied Physics Letters, 2011, 98(15): 151908.
DOI:10.1063/1.3580608

摘要

This study theoretically and experimentally investigates the transmission properties of a meta-material slab comprised of two layers of metallic fish-scale structure arrays and a sandwiched dielectric layer. Calculations show that the asymmetric transmission can be tuned by varying the slab thickness, due to near-field interlayer coupling. The spatial evolution of the electric field indicates that the twist structure functions as a perfect polarization transformer at certain frequencies. Measured transmission spectra are in good agreement with calculated results when material dissipation is considered.