Vicente Raúl, Tang Shuo, Mulet Josep, Mirasso Claudio R, Liu Jia-Ming
Departament de Física, Universitat de les Illes Balears, Campus UIB, E-07122 Palma de Mallorca, Spain.
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Apr;73(4 Pt 2):047201. doi: 10.1103/PhysRevE.73.047201. Epub 2006 Apr 10.
We theoretically investigate the nonlinear dynamics and synchronization properties between two mutually coupled semiconductor lasers units. Each unit can self-oscillate by means of delayed optoelectronic feedback loops. The mutual optoelectronic interactions between the laser units take into account the finite propagation time of the signals. Under perfectly symmetric conditions, we find different "death by delay" islands that persist for instantaneous coupling. The appearance of (zero lag) isochronous chaotic synchronization, under appropriate driving conditions, is another distinctive feature of the delayed feedback loops in the laser units. For slightly asymmetric operation, we obtain frequency locked bands (Arnold Tongue) whose width periodically changes with the coupling delay time.
我们从理论上研究了两个相互耦合的半导体激光器单元之间的非线性动力学和同步特性。每个单元都可以通过延迟光电反馈回路进行自振荡。激光单元之间的相互光电相互作用考虑了信号的有限传播时间。在完全对称的条件下，我们发现了不同的“延迟致灭”岛，这些岛在瞬时耦合时依然存在。在适当的驱动条件下，（零延迟）等时混沌同步的出现是激光单元中延迟反馈回路的另一个显著特征。对于稍微不对称的运行情况，我们得到了频率锁定带（阿诺德舌），其宽度随耦合延迟时间周期性变化。
