Design of an all-optical insulator-metal-insulator and metal-insulator-metal Feynman logic gates.

In this paper, two Feynman logic gates based on insulator-metal-insulator (IMI) and metal-insulator-metal (MIM) waveguides are proposed. The gates are modeled using the finite-difference time-domain method. The IMI-based Feynman gate shows high extinction ratio (ER) values of 11.