Kanter Ido, Gross Noam, Klein Einat, Kopelowitz Evi, Yoskovits Pinhas, Khaykovich Lev, Kinzel Wolfgang, Rosenbluh Michael
Department of Physics, Bar-Ilan University, Ramat-Gan, Israel.
Phys Rev Lett. 2007 Apr 13;98(15):154101. doi: 10.1103/PhysRevLett.98.154101.
Two mutually coupled chaotic diode lasers exhibit stable isochronal synchronization in the presence of self-feedback. When the mutual communication between the lasers is discontinued by a shutter and the two uncoupled lasers are subject to self-feedback only, the desynchronization time is found to scale as Adtau, where Ad>1 and tau corresponds to the optical distance between the lasers. Prior to synchronization, when the two lasers are uncorrelated and the shutter between them is opened, the synchronization time is found to be much shorter, though still proportional to tau. As a consequence of these results, the synchronization is not significantly altered if the shutter is opened or closed faster than the desynchronization time. Experiments in which the coupling between two chaotic-synchronized diode lasers is modulated with an electro-optic shutter are found to be consistent with the results of numerical simulations.
两个相互耦合的混沌二极管激光器在存在自反馈的情况下表现出稳定的等时同步。当通过快门中断激光器之间的相互通信，并且两个未耦合的激光器仅受到自反馈作用时，发现失同步时间按Adτ 缩放，其中Ad > 1且τ 对应于激光器之间的光学距离。在同步之前，当两个激光器不相关且它们之间的快门打开时，发现同步时间要短得多，尽管仍然与τ 成正比。由于这些结果，如果快门打开或关闭的速度比失同步时间快，则同步不会显著改变。用电光快门调制两个混沌同步二极管激光器之间耦合的实验结果与数值模拟结果一致。
