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Published on: December 15, 2021
Spectral incoherent solitons: a localized soliton behavior in the frequency domain
Antonio Picozzi1, Stéphane Pitois, Guy Millot
1Institut Carnot de Bourgogne, CNRS, Université de Bourgogne, Dijon, France.
Abstract:
We show both theoretically and experimentally in an optical fiber system that a noninstantaneous nonlinear environment supports the existence of spectral incoherent solitons. Contrary to conventional solitons, spectral incoherent solitons do not exhibit a confinement in the spatiotemporal domain, but exclusively in the frequency domain. The theory reveals that the causality condition inherent to the nonlinear response function is the key property underlying the existence of spectral incoherent solitons. These solitons constitute nonequilibrium stable states of the incoherent field and are shown to be robust with respect to binary collisions.
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