University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Observation of Soliton Gases in optical fibers and deep water tank experiments

Observation of Soliton Gases in optical fibers and deep water tank experiments

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact nobody.

HY2W05 - Physical applications

The concept of soliton gas (SG) as a large ensemble of solitons randomly distributed on an infinite line and elastically has been first introduced by Zakharov [Sov. Phys. JETP 33 , 538 (1971)]. Zakharov’s kinetic equation describes diluted SG and has been generalized to the case of a dense SG [Phys. Rev. Lett. 95,204101 (2005), PRE , 101, 052207 (2020)]. The SG is characterized by a density of state (DOS) which corresponds to the spatial distribution of the spectral parameters (in the framework of inverse scattering transform.   We report the generation and the measurement of SG in water waves and in optical fiber experiments [Phys Rev. Lett. 125, 264101 (2020)]. We show that the asymptotic stage of the noise-induced modulation instability corresponds to a SG having a specific DOS . This SG can be described by a N-soliton solution of the focusing one-dimensional nonlinear Schrödinger equation (1DNLSE). Our investigations reveal a remarkable agreement between spectral (Fourier) and statistical properties of the long-term evolution of the MI (observed in experiments and in numerical simulations of the 1DNLSE) and those of a constructed multisoliton, random-phase bound states [Phys. Rev. Lett. 123 (23), 234102 (2019)].

This talk is part of the Isaac Newton Institute Seminar Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2023 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity