Hicke K, D'Huys O, Flunkert V, Schöll E, Danckaert J, Fischer I
Instituto de Fisica Interdisciplinar y Sistemas Complejos (IFISC), UIB-CSIC, Campus Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain.
Phys Rev E Stat Nonlin Soft Matter Phys. 2011 May;83(5 Pt 2):056211. doi: 10.1103/PhysRevE.83.056211. Epub 2011 May 18.
We study the synchronization properties of the delay dynamics of two identical semiconductor lasers coupled through a semitransparent mirror. Via an analytical and numerical approach, we investigate the influence of asymmetries, in particular mismatches of self- and cross-coupling strength and differences in self- and cross-coupling delay. We show that the former mismatch affects the stability of the zero-lag state but not the dynamics within the synchronization manifold, while the latter mismatch does not affect the quality of synchronization but alters the dynamics significantly. Our results are extended to different unidirectional coupling schemes. This is highly relevant for communication schemes utilizing chaotic dynamics. Finally, the influence of nonlinear gain saturation on the dynamics and stability of synchronization is discussed.
我们研究了通过半透明镜耦合的两个相同半导体激光器延迟动力学的同步特性。通过解析和数值方法，我们研究了不对称性的影响，特别是自耦合和交叉耦合强度的失配以及自耦合和交叉耦合延迟的差异。我们表明，前一种失配会影响零延迟状态的稳定性，但不会影响同步流形内的动力学，而后一种失配不会影响同步质量，但会显著改变动力学。我们的结果扩展到了不同的单向耦合方案。这对于利用混沌动力学的通信方案具有高度相关性。最后，讨论了非线性增益饱和对同步动力学和稳定性的影响。
