Nonlinear dynamics in multimode optical fibers
Abstract
We overview recent advances in the research on spatiotemporal beam shaping in nonlinear multimode optical fibers. An intense light beam coupled to a graded index (GRIN) highly multimode fiber undergoes a series of complex nonlinear processes when its power grows larger. Among them, the lowest threshold effect is the Kerr-induced beam self-cleaning, that redistributes most of the beam energy into a robust bell-shaped beam close to the fundamental mode. At higher powers a series of spectral sidebands is generated, thanks to the phase matching induced by the long period grating due to the periodic self-imaging of the beam and the Kerr effect. Subsequently a broadband and spectrally flat supercontinuum is generated, extending from the visible to the mid-infrared.
Keywords
Cite
@article{arxiv.1802.09470,
title = {Nonlinear dynamics in multimode optical fibers},
author = {Stefan Wabnitz and Alessandro Tonello and Vincent Couderc and Daniele Modotto and Alain Barthelemy and Guy Millot and Katarzyna Krupa},
journal= {arXiv preprint arXiv:1802.09470},
year = {2018}
}