Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2004-09-27
Nonlinear Sciences
Chaotic Dynamics
12 pages, 9 figures
Scientific paper
Combination of two basic types of synchronization, anticipated and isochronous synchronization, is investigated numerically in coupled semiconductor lasers. Due to the combination, a synchronization of good quality can be obtained. We study the dependence of the lag time between two lasers and the synchronization quality on the converse coupling retardation time $\tau_{c21}$. When $\tau_{c21}$ is close to the difference of external cavity round trip time $\tau$ and coupling retardation time $\tau_{c12}$, the combination of anticipated and isochronous synchronization may produce a better synchronization, with a lag time proportional to $\tau_{c21}$. When $\tau_{c21}$ is largely different from $\tau-\tau_{c12}$, the combination is noneffective and even negative in some cases, with a lag time independent of $\tau_{c21}$.
Ni Yun
Wu Liang
Zhu Shiqun
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