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Chaos synchronization regimes in multiple-time-delay semiconductor lasers.

E M Shahverdiev¹, K A Shore

¹School of Electronics, University of Wales, Bangor, Dean Street, Bangor LL57 1UT, Wales, United Kingdom.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|July 23, 2008

Summary

This summary is machine-generated.

Chaos synchronization in multiple-time-delay semiconductor lasers was investigated. Bidirectionally coupled lasers with additional feedback showed enhanced synchronization quality, improving laser performance.

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Area of Science:

Optics and Photonics
Nonlinear Dynamics
Laser Physics

Background:

Semiconductor lasers are crucial for modern optics and photonics.
Chaos synchronization is a complex phenomenon with potential applications.
Multiple time delays introduce unique dynamics in laser systems.

Purpose of the Study:

To investigate chaos synchronization regimes in coupled multiple-time-delay semiconductor lasers.
To compare synchronization in unidirectionally and bidirectionally coupled systems.
To assess the impact of additional feedback on synchronization quality.

Main Methods:

Numerical simulations of coupled multiple-time-delay semiconductor laser models.
Analysis of synchronization criteria and metrics.
Varying coupling configurations and feedback parameters.

Main Results:

Chaos synchronization is achievable in both unidirectional and bidirectional coupling schemes.
Bidirectionally coupled systems exhibit distinct synchronization behaviors compared to unidirectional ones.
Introducing additional feedback in bidirectionally coupled lasers significantly improves synchronization quality.

Conclusions:

Chaos synchronization in multiple-time-delay semiconductor lasers is feasible.
Bidirectional coupling with feedback offers a promising route to high-quality synchronization.
This research contributes to understanding complex dynamics in laser systems for potential applications.