Comunicarea optică bazată pe haos cu ajutorul laserelor semiconductoare cu cavitate de aer

Abstract

In this review, we report the results of the dynamical behavior of a novel integrated semiconductor laser subject to multiple optical feedback loops. The laser’s structure consists of distributed feedback section coupled to a waveguide, an air gap section and phase section. It is found that due to the multiple feedback loops and under certain operating conditions the laser displays chaotic behaviors appropriate for chaos-based communications. The optimal conditions for chaos generation are identified. The synchronization of two unidirectional coupled (master– slave) systems are also studied. Finally, examples of message encoding and decoding are presented and discussed.