论文标题
随机分散管理的纤维链接中的调节不稳定性
Modulational instability in randomly dispersion-managed fiber links
论文作者
论文摘要
我们在分散管理系统中研究模量不稳定，在该系统中，在参考长度附近，在均匀分布的随机距离上更改了组速度分散体的符号。提出了一种分析技术，以估计线性化的非线性schr {Ö} dinger方程的不稳定性增益，该方程也可以通过数值求解。数值和分析结果的比较证实了我们方法的有效性。出现了纯粹随机来源的模量不稳定。还讨论了周期性和随机起源的不稳定带之间的竞争。我们发现不稳定的增益与均质异常分散纤维中的常规值相媲美。
We study modulational instability in a dispersion-managed system where the sign of the group-velocity dispersion is changed at uniformly distributed random distances around a reference length. An analytical technique is presented to estimate the instability gain from the linearized nonlinear Schr{ö}dinger equation, which is also solved numerically. The comparison of numerical and analytical results confirms the validity of our approach. Modulational instability of purely stochastic origin appears. A competition between instability bands of periodic and stochastic origin is also discussed. We find an instability gain comparable to the conventional values found in a homogeneous anomalous dispersion fiber.
