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Scalable parallel physical random number generator based on a superluminescent LED.

Xiaowen Li¹, Adam B Cohen, Thomas E Murphy

¹Department of Physics, Beijing Normal University, Beijing, China. xwli@bnu.edu.cn

|March 16, 2011

Summary

This study introduces a novel optoelectronic system for generating two independent, high-speed random bit streams simultaneously from a single light source. This breakthrough enables a total random bit generation rate of 20 Gb/s using compact components.

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Area of Science:

Optoelectronics
Information Security
Photonics

Background:

Generating high-speed, unpredictable random bit streams is crucial for secure communications and advanced computing.
Existing methods often face limitations in speed, cost, or integration complexity.

Purpose of the Study:

To develop an efficient optoelectronic system for simultaneous generation of parallel, independent random bit streams.
To leverage spectrally separated noise signals from a single optical source for enhanced random bit generation.

Main Methods:

Utilized a single fiber-coupled superluminescent LED (SLED) as the optical noise source.
Employed a pair of nonoverlapping spectral filters to isolate distinct noise signals.
Implemented chip-based optoelectronic components for signal processing and bit stream generation.

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Main Results:

Successfully generated two independent 10 Gb/s random bit streams.
Achieved a cumulative random bit generation rate of 20 Gb/s.
Demonstrated the system's reliance on compact, potentially integrable optoelectronic components.

Conclusions:

The developed system offers a novel and efficient method for high-speed random bit generation.
The use of spectrally separated noise signals and chip-based components suggests potential for compact and economical solutions.
This technology could advance applications requiring secure and high-volume random number generation.