Optimized plasmonic reversible logic gate for low loss communication

Area of Science:

• Optoelectronics
• Nanophotonics
• Plasmonics

Background:

• Reversible computing requires logic gates to minimize information loss and power consumption.
• Plasmonic optical waveguides enable controlled fabrication of nanostructures for advanced optical devices.

Purpose of the Study:

• To design and simulate a Feynman logic gate using a metal-insulator-metal optical waveguide.
• To evaluate the performance of the proposed Feynman logic gate in terms of footprint, extinction ratio, and insertion loss.

Main Methods:

• Simulation of the Feynman logic gate using a cascading metal-insulator-metal optical waveguide based on Mach-Zehnder interferometers.
• Utilizing the finite difference time domain (FDTD) method for numerical simulation.
• Verification of simulation results through mathematical computation in MATLAB.

Main Results:

• The proposed Feynman logic gate achieves a footprint of 62 µm × 9 µm.
• The device exhibits an extinction ratio of 10.57 dB.
• Insertion losses are measured at -0.969 dB and -1.191 dB, outperforming existing electro-optic designs.

Conclusions:

• The developed plasmonic optical waveguide Feynman logic gate offers superior performance compared to electro-optic alternatives.
• This design is a promising advancement for low-power, high-efficiency reversible computing systems.