High-transmission negative refraction of discrete rod resonators confined in a metal waveguide at visible wavelengths.
A type of metamaterial composed of a metal waveguide with discrete rod resonators, is investigated in this work for the first time. The simulation results show that the maximum of FOM =-Re(n)/Im(n) reaches 1.12 at the 543.5 nm. For another set of dimensions of the unit cell, the maximum of FOM reaches 1.41 at the wavelength of 721 nm. Our additional large numbers of simulation results show that different negative-index bands in visible wavelengths can be obtained by tuning the geometric dimensions of the unit cell.
Yan
Changchun
C
Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China.
Wang
Qiong
Q
Zhuo
Shichuang
S
Cui
Yiping
Y
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008420:Manufactured Materials; D008670:Metals / Q000737:chemistry*; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D014159:Transducers
D008670:Metals