Coexistence of collapse and stable spatiotemporal solitons in multimode fibers

Olga V. Shtyrina, Mikhail P. Fedoruk, Yuri S. Kivshar, Sergei K. Turitsyn

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We analyze spatiotemporal solitons in multimode optical fibers and demonstrate the existence of stable solitons, in a sharp contrast to earlier predictions of collapse of multidimensional solitons in three-dimensional media. We discuss the coexistence of blow-up solutions and collapse stabilization by a low-dimensional external potential in graded-index media, and also predict the existence of stable higher-order nonlinear waves such as dipole-mode spatiotemporal solitons. To support the main conclusions of our numerical studies we employ a variational approach and derive analytically the stability criterion for input powers for the collapse stabilization.
Original languageEnglish
JournalPhysical Review A
Issue number1
Early online date24 Jan 2018
Publication statusPublished - 25 Jan 2018

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© 2018 American Physical Society.


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