Design of A Graphene-based Plasmonic Half-adder

摘要

A graphene-based plasmonic half-adder using cascaded microring resonators is proposed and theoretically investigated. Two electrical signals are applied to modulate microring resonators to adjust the chemical potentials of graphene, resulting in a change in the modal effective index so that the logic function of the half-adder can be performed. Performance of the designed graphene-based plasmonic half-adder is analyzed by using COMSOL and CST. Calculation results show that the maximum crosstalk of the half-adder at an operating frequency of 30 THz is -10.23 dB when input logic states are '00', '01', '10', and '11'.