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Truly random bit generation based on a novel random Brillouin fiber laser
Optics Letters
|November 14, 2015
Summary
We developed a dual-emission random Brillouin fiber laser (RBFL) with bidirectional pumping. This novel laser generates unpredictable outputs, enabling a 5 Mbps random bit generator with verified randomness.
Area of Science:
- Optics and Photonics
- Quantum Information Science
Background:
- Random Brillouin fiber lasers (RBFLs) are explored for secure communication and random number generation.
- Controlling chaotic dynamics in fiber lasers is crucial for advanced applications.
Purpose of the Study:
- To propose and investigate a novel dual-emission random Brillouin fiber laser (RBFL) utilizing bidirectional pumping.
- To analyze the chaotic properties and verify the randomness of the generated laser outputs.
- To demonstrate a random bit generator (RBG) based on the RBFL's quantum noise.
Main Methods:
- Numerical simulations were performed to study the temporal and statistical characteristics of the RBFL.
- Experimental verification was conducted to validate the simulation findings.
- A random bit generator was implemented using the RBFL's output.
Main Results:
- The proposed RBFL exhibits intrinsic unpredictable intensity fluctuations.
- Two completely uncorrelated laser outputs were achieved.
- A random bit generator was successfully realized at a bit rate of 5 Mbps.
- The randomness of the generated bits was rigorously verified.
Conclusions:
- The dual-emission RBFL with bidirectional pumping offers a robust platform for generating chaotic dynamics.
- The demonstrated RBFL-based RBG provides a high-speed and verifiable source of randomness.
- This work advances the development of secure communication and random number generation technologies.
