1- Department of Electrical Engineering, Shiraz University of Technology
Abstract: (1356 Views)
In this paper, a plasmonic nanoswitch that is composed of vanadium dioxide (VO2) in infrared region is designed and simulated. The optical switching of this nanostructure is due to the phase transition of insulation to metal in the VO2 layer with temperature change. The phase transition of the VO2 layer results in a change in the absorption spectrum of the nanostructure. By choosing the values of 340 nm and 20 nm for the thicknesses of the SiO2 and VO2 layers, respectively, the absorptions of above 99% in the insulation phase and near zero in the metal phase are obtained. Therefore, the attained extinction ratio of the proposed switch is 11.8 dB. Obtained results demonstrate the high potential of vanadium oxides as efficient material for plasmonic devices such as modulators and sensors at optical frequencies.
Type of Study:
Research |
Subject:
Special