An optimized design of all-optical XOR, OR, and NOT gates using plasmonic waveguide

Abstract

All-optical logic gates have extraordinary application in ultra-high-speed Boolean operation and logical computation. All-optical logic gates like XOR, OR, and NOT using metal–insulator–metal waveguides are proposed here and designed under the footprint of 13 $${\upmu}{\text{m}}^{2}$$ which is smaller than the previously reported work. The device's analysis is performed using the finite-difference time-domain method (FDTD), and results have been verified using MATLAB simulation. The performance parameter, extinction ratio for the proposed device, is computed and obtained 27.80 dB. The suggested logic gates can also be used as major components in optical communication, which leads to the development of a new way for the design of plasmonic integrated circuits.