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arXiv · 2011.04934

Spatiotemporal solitons in dispersion-managed multimode fibers

Thawatchai Mayteevarunyoo·Boris A. Malomed·Dmitry V. Skryabin
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Abstract

We develop the scheme of dispersion management (DM) for three-dimensional (3D) solitons in a multimode optical fiber. It is modeled by the parabolic confining potential acting in the transverse plane in combination with the cubic self-focusing. The DM map is adopted in the form of alternating segments with anomalous and normal group-velocity dispersion. Previously, temporal DM solitons were studied in detail in single-mode fibers, and some solutions for 2D spatiotemporal "light bullets", stabilized by DM, were found in the model of a planar waveguide. By means of numerical methods, we demonstrate that stability of the 3D spatiotemporal solitons is determined by the usual DM-strength parameter, $S$: they are quasi-stable at $ S S_{0}$. Stable vortex solitons are constructed too. We also consider collisions between the 3D solitons, in both axial and transverse directions. The interactions are quasi-elastic, including periodic collisions between solitons which perform shuttle motion in the transverse plane.

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Thawatchai Mayteevarunyoo, Boris A. Malomed, Dmitry V. Skryabin. 2020-11-10. Spatiotemporal solitons in dispersion-managed multimode fibers. https://doi.org/10.1088/2040-8986%2Fabcc57

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