Dynamics of Quantum Dots Lasers under the Influence of Double Cavity External Optical Feedback

Abstract

We report the results of numerical investigations of the dynamical behavior of an integrated device composed of a semiconductor laser with quantum dots active medium and a double cavity that provides optical feedback. Due to the influence of the feedback, under the appropriate conditions, the system displays chaotic behavior appropriate for chaos-based communications. The optimal conditions for chaos generation are identified. It is found that the double cavity feedback requires lower feedback strengths for developing high complexity chaos when compared with a single cavity.