Simultaneous full set of three-input canonical logic units in a single nonlinear device for an all-optical...

Area of Science:

• Optoelectronics
• Optical Computing
• Integrated Photonics

Background:

• All-optical programmable logic arrays (CLUs-PLA) offer flexibility but are limited by the number of three-input canonical logic units (CLUs) generated per nonlinear device.
• This limitation restricts the practical application and complexity of all-optical computing systems.

Purpose of the Study:

• To overcome the limitations of current CLUs-PLA by demonstrating the simultaneous generation of a full set of three-input CLUs in a single nonlinear device.
• To enable arbitrary function implementation in all-optical programmable logic arrays.

Main Methods:

• Utilized bidirectional four-wave mixing (FWM) to generate optical signals.
• Optimized wavelength spacing to enhance the generation of multiple CLUs.
• Experimentally demonstrated the device's functionality at 40 Gb/s.

Main Results:

• Successfully demonstrated the simultaneous generation of a full set of three-input CLUs within one nonlinear device.
• Implemented various combinational logic functions, including user-defined logic, a full adder, and a full subtractor, with error-free performance.
• Achieved arbitrary function implementation using the developed all-optical three-input PLA.

Conclusions:

• The proposed scheme significantly reduces the number of nonlinear devices required for CLUs-PLA.
• This simplification leads to reduced power consumption and a more streamlined optical computing system.
• The demonstrated technology holds substantial potential for future high-speed optical computing applications.