Chaos Synchronization In Semiconductor Laser With Optical Feedback

With the achievement of the chaos synchronization, more and more attentions are paid to the cryptographic communication, in which the carrier is chaotic signal with good cryptic function, unpredictability, high complexity. The dynamics of laser chaos is about the chaotic behavior in laser system. There are all the complex dynamics characteristic of dissipative system, and its degree of freedom can easily be controlled. Semiconductor laser, as the better optical resource in the optical communication, which can generate large band-width through feedback, has been enthusiastically studied.Laser system with delayed optical feedback appears rather complex dynamics behavior. The open-loop type of semiconductor laser chaos synchronization system for the research is used in this paper. On the one hand, the feasible of synchronization by theoretical analysis is proved. In the same time, we can see the change of synchronization error caused by parameter mismatched. And we can talk about the different of complete synchronization and generalized synchronization. On the other hand, we designed an experimental set and observed synchronized phenomenon from the oscilloscope.