Otsuka Kenju, Ohtomo Takayuki, Yoshioka Atsushi, Ko Jing-Yuan
Department of Human and Information Science, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan.
Chaos. 2002 Sep;12(3):678-687. doi: 10.1063/1.1496856.
We study chaos synchronization experimentally in a modulated globally coupled three-mode laser with different modal gains subjected to self-mixing Doppler-shifted feedback, which can apply the loss modulation to individual modes at Doppler-shift frequencies. Depending on the pump power, different forms of collective chaos synchronizations were found to appear when the laser was modulated at the highest relaxation oscillation frequency, reflecting the change in cross-saturation coefficient among modes. In the present experiment, each pair of modes exhibited phase, lag, or generalized synchronization collectively according to the inherent antiphase dynamics, where these types of synchronization have already been demonstrated in two coupled chaotic oscillators in different physical systems. Information flows among oscillating modes which are established in different forms of collective chaos synchronizations were characterized by information-circulation analysis of the experimental time series. (c) 2002 American Institute of Physics.
我们通过实验研究了在具有不同模式增益的受自混合多普勒频移反馈作用的调制全局耦合三模激光器中的混沌同步，该反馈可在多普勒频移频率下对各个模式施加损耗调制。根据泵浦功率，当激光器在最高弛豫振荡频率下进行调制时，发现会出现不同形式的集体混沌同步，这反映了模式间交叉饱和系数的变化。在本实验中，每对模式根据固有的反相动力学集体表现出相位同步、滞后同步或广义同步，这些同步类型已在不同物理系统中的两个耦合混沌振荡器中得到证实。通过对实验时间序列进行信息循环分析，表征了在不同形式的集体混沌同步中建立的振荡模式之间的信息流。（c）2002美国物理研究所。
