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arXiv · 2211.16326

Modulational instability in randomly dispersion-managed fiber links

Andrea Armaroli·Guillaume Dujardin·Alexandre Kudlinski·Arnaud Mussot·Stephan De Bièvre·Matteo Conforti
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Abstract

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{\"o}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.

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Andrea Armaroli, Guillaume Dujardin, Alexandre Kudlinski, Arnaud Mussot, Stephan De Bièvre, Matteo Conforti. 2022-11-29. Modulational instability in randomly dispersion-managed fiber links. https://doi.org/10.1103/physreva.108.023510

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