Reconfigurable electro-optical logic gates using a 2-layer multilayer perceptron.

Area of Science:

• Photonics and Optical Engineering
• Integrated Optics
• Optical Computing

Background:

• Traditional electronic computing faces limitations in speed and power consumption.
• Optical computing offers potential for higher speed and lower power consumption.
• Electro-optical devices are key components for integrating optical and electronic functionalities.

Purpose of the Study:

• To design and demonstrate fundamental electro-optical logic gates (OR, AND, XOR, NAND, NOR, XNOR).
• To investigate the performance of these gates under ideal and non-ideal (1% fabrication/operation error) conditions.
• To assess the feasibility of fabricating these gates on a silicon-based chip for integrated optics computing.

Main Methods:

• Utilized optical amplifiers, directional couplers, and phase modulators to construct electro-optical gates.
• Employed a 2-layer multilayer-perceptron structure for matrix inversion to determine device parameters (coupling ratio, phase delay).
• Conducted simulations to evaluate gate performance and system tolerance to errors.

Main Results:

• Successfully demonstrated electro-optical implementations of all six basic logic gates.
• Achieved high output visibility (greater than 0.83) even with simulated 1% fabrication or operation errors.
• Validated the robustness and tolerance of the proposed electro-optical gate system.

Conclusions:

• The developed electro-optical gates are viable for building optical logic circuits.
• The system exhibits good tolerance to fabrication and operational imperfections.
• This work contributes to the development of silicon-based integrated optics computing systems.