Open AccessTunable reflector with active magnetic metamaterials
Author(s) -
Tianwei Deng,
Renliang Huang,
MingChun Tang,
PuayHoon Tan
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.006287
Subject(s) - metamaterial , reflector (photography) , optics , materials science , metamaterial absorber , tunable metamaterials , optoelectronics , physics , light source
We placed active magnetic metamaterials on metallic surface to implement a tunable reflector with excellent agile performance. By incorporating active elements into the unit cells of the magnetic metamaterial, this active magnetic metamaterial can be tuned to switch function of the reflector among a perfect absorber, a perfect reflector and a gain reflector. This brings about DC control lines to electrically tune the active magnetic metamaterial with positive loss, zero loss and even negative loss. The design, analytical and numerical simulation methods, and experimental results of the tunable reflector are presented.