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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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Chaos self-synchronization in a semiconductor laser.

Antonio Mecozzi¹, Cristian Antonelli, Valerio Annovazzi-Lodi

¹Dipartimento di Ingegneria Elettrica e dell'Informazione and CNISM, Università dell'Aquila, 67040 L'Aquila, Italy. amecozzi@ing.univaq.it

|May 5, 2009

Summary

This summary is machine-generated.

Semiconductor lasers driven to chaos can achieve self-synchronization. This study analyzes the periodic output regularity resulting from reinjecting a delayed optical feedback replica.

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Area of Science:

Physics
Optics
Nonlinear Dynamics

Background:

Semiconductor lasers are prone to chaotic behavior when subjected to optical feedback.
Controlling chaotic dynamics in lasers is crucial for various applications.

Purpose of the Study:

To investigate the phenomenon of self-synchronization in chaotic semiconductor lasers.
To analyze the periodic regularity of the laser output after self-synchronization.

Main Methods:

Theoretical modeling of semiconductor laser dynamics with optical feedback.
Experimental validation of the self-synchronization effect.
Analysis of the temporal and spectral properties of the synchronized output.

Main Results:

Demonstrated that chaotic semiconductor lasers can achieve self-synchronization.
Showed that self-synchronization is induced by reinjecting a delayed replica of the laser's own output.
Identified the resulting periodic regularity in the laser output.

Conclusions:

Optical feedback-induced chaos in semiconductor lasers can be controlled via self-synchronization.
Self-synchronization leads to a predictable and regular laser output.
This finding has implications for stabilizing laser dynamics and applications requiring coherent light sources.