Spatiotemporal nonlinear dynamics in multimode fibers
Authors: Krupa K., Couderc V., Tonello A., Picozzi A., Barthelemy A., Millot G., Wabnitz S.
Autors Affiliation: Univ Brescia, Brescia, Italy; Univ Limoges, Limoges, France; Univ Bourgogne Franche Comte, Dijon, France; Ist Nazl Ott CNR, Brescia, Italy; Novosibirsk State Univ, Novosibirsk, Russia
Abstract: Nonlinear mode coupling in multimode optical fibers leads to complex self-organization phenomena. These are associated with the emergence of extreme waves, in the form of stable nonlinear coherent attractors characterized by low-order transverse mode patterns. The periodic or quasi-periodic oscillations of the multimode beam intensity due to mode beating lead to light scattering into a series of spectral sidebands spanning multiple octaves. We overview recent theory and experiments of complex spatiotemporal nonlinear beam reshaping phenomena in both passive and active multimode optical fiber systems.
KeyWords: GRADED-INDEX FIBERS; WAVE TURBULENCE; MODULATIONAL INSTABILITY; PULSE-PROPAGATION; ROGUE WAVES; BEAM; GENERATION; CONVERSION; LIGHT