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Implementation of an optical multiwavelength full adder with a polarization encoding scheme.

W Wu, S Campbell, P Yeh

|October 27, 2009

Summary

This study introduces an optical multiwavelength full adder using polarization encoding and four-wave mixing. This technology enables simultaneous multibit operations for faster optical computing.

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Area of Science:

Optoelectronics
Nonlinear Optics
Photorefractive Materials

Background:

Traditional computing faces limitations in speed and parallel processing.
Optical computing offers potential for high-speed, parallel data manipulation.
Photorefractive crystals provide a versatile medium for nonlinear optical interactions.

Purpose of the Study:

To propose and demonstrate an optical multiwavelength full adder.
To leverage polarization encoding and four-wave mixing for binary operations.
To explore simultaneous multibit operations using spectral parallelism.

Main Methods:

Utilizing optical wavelengths to encode binary number bits.
Employing polarization encoding for accurate SUM operations.
Implementing four-wave mixing within photorefractive crystals.
Demonstrating a carry-save full adder for enhanced speed.

Main Results:

Successful demonstration of an optical multiwavelength full adder.
Effective encoding of binary data using different optical wavelengths.
Simultaneous execution of multibit operations enabled by spectral parallelism.
Validation of polarization encoding for efficient SUM operations.
Proof of concept for a carry-save full adder.

Conclusions:

The proposed optical multiwavelength full adder is a viable approach for high-speed optical computing.
Polarization encoding and four-wave mixing in photorefractive crystals offer a robust platform for optical arithmetic.
This technology paves the way for faster and more efficient optical data processing and multinumber arithmetic.