Anticipation in the synchronization of chaotic semiconductor lasers with optical feedback

The synchronization of chatoic semiconductor lasers with optical feedback i s studied numerically in a one-way coupling configuration, in which a small amount of the intensity of one laser (master laser) is injected coherently into the other (slave laser). A regime of anticipated synchronization is f ound, in which the intensity of the slave laser is synchronized to the futu re chaotic intensity of the master laser. Anticipation is robust to small n oise and parameter mismatches, but in this case the synchronization is not complete. It is also shown that anticipated synchronization occurs in coupl ed time-delay systems, when the coupling has a delay that is less than the delay of the systems.