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Updated: Jun 12, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Spectrally efficient multiplexing of chaotic light.

D Rontani¹, A Locquet, M Sciamanna

¹UMI 2958 Georgia Tech-CNRS, GeorgiaTech Lorraine, 2-3 Rue Marconi F-57070, Metz, France. damien.rontani@supelec.fr

|June 16, 2010

Summary

Researchers demonstrate multiplexing and demultiplexing of two distinct chaotic optical signals. This method uses mutually coupled external-cavity semiconductor lasers for efficient chaos-based optical encryption and decryption.

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Area of Science:

Optics and Photonics
Laser Physics
Information Security

Background:

Chaotic optical signals offer unique properties for secure communication.
Multiplexing and demultiplexing are crucial for increasing data transmission capacity.
Mutually coupled external-cavity semiconductor lasers are a viable source for chaotic signals.

Purpose of the Study:

To numerically demonstrate the multiplexing and demultiplexing of two distinct chaotic optical signals.
To explore the use of complete chaos synchronization for demultiplexing.
To investigate a novel configuration for spectrally efficient chaos-based optical encryption.

Main Methods:

Numerical simulation of mutually coupled external-cavity semiconductor lasers.
Generation of two distinct chaotic optical signals with overlapping spectra.

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Optical injection locking and complete chaos synchronization for signal demultiplexing.

Main Results:

Successful multiplexing and demultiplexing of two distinct chaotic optical signals were numerically demonstrated.
The proposed method effectively separated the two signals despite their strongly overlapped spectra.
The configuration utilizes the same multiplexed signal for optical injection, simplifying the system.

Conclusions:

The demonstrated technique enables spectrally efficient multiplexing and demultiplexing of chaotic optical signals.
Complete chaos synchronization is a powerful tool for demultiplexing in such systems.
This approach holds significant potential for secure optical encryption and decryption of multiple data streams.