It has been recently demonstrated that multimode solitons are unstable objects which evolve, in the range of hundreds of nonlinearity lengths, into stable single-mode solitons carried by the fundamental mode. We show experimentally and by numerical simulations that femtosecond multimode solitons composed by non-degenerate modes have unique properties: when propagating in graded-index fibers, their pulsewidth and energy do not depend on the input pulsewidth, but only on input coupling conditions and linear dispersive properties of the fiber, hence on their wavelength. Because of these properties, spatiotemporal solitons composed by non-degenerate modes with pulsewidths longer than a few hundreds of femtoseconds cannot be generated in graded-index fibers.

Conditions for walk-off soliton generation in a multimode fiber / Zitelli, M.; Mangini, F.; Ferraro, M.; Sidelnikov, O.; Wabnitz, S.. - In: COMMUNICATIONS PHYSICS. - ISSN 2399-3650. - 4:1(2021), pp. 1-6. [10.1038/s42005-021-00687-0]

Conditions for walk-off soliton generation in a multimode fiber

Zitelli M.;Mangini F.;Ferraro M.;Wabnitz S.
2021

Abstract

It has been recently demonstrated that multimode solitons are unstable objects which evolve, in the range of hundreds of nonlinearity lengths, into stable single-mode solitons carried by the fundamental mode. We show experimentally and by numerical simulations that femtosecond multimode solitons composed by non-degenerate modes have unique properties: when propagating in graded-index fibers, their pulsewidth and energy do not depend on the input pulsewidth, but only on input coupling conditions and linear dispersive properties of the fiber, hence on their wavelength. Because of these properties, spatiotemporal solitons composed by non-degenerate modes with pulsewidths longer than a few hundreds of femtoseconds cannot be generated in graded-index fibers.
2021
optical fibers; nonlinear optics; optical solitons; Kerr effect; four wave mixing
01 Pubblicazione su rivista::01a Articolo in rivista
Conditions for walk-off soliton generation in a multimode fiber / Zitelli, M.; Mangini, F.; Ferraro, M.; Sidelnikov, O.; Wabnitz, S.. - In: COMMUNICATIONS PHYSICS. - ISSN 2399-3650. - 4:1(2021), pp. 1-6. [10.1038/s42005-021-00687-0]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1565913
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