Rogue waves in multiphase solutions of the focusing NLS equation

Marco Bertola, Gennady El, Alex Tovbis

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Rogue waves appearing on deep water or in optical fibres are often modelled by certain breather solutions of the focusing nonlinear Schrödinger (fNLS) equation which are referred to as solitons on finite background (SFBs). A more general modelling of rogue waves can be achieved via the consideration of multiphase, or finite-band, fNLS solutions of whom the standard SFBs and the structures forming due to their collisions represent particular, degenerate, cases. A generalized rogue wave notion then naturally enters as a large-amplitude localized coherent structure occurring within a finite-band fNLS solution. In this paper, we use the winding of real tori to show the mechanism of the appearance of such generalized rogue waves and derive an analytical criterion distinguishing finite-band potentials of the fNLS equation that exhibit generalized rogue waves.
Original languageEnglish
Article number20160340
JournalProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume472
DOIs
Publication statusPublished - 1 Oct 2016

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