Modulational Instability of a Plane Wave in the Presence of Localized Perturbations: Experiments in Nonlinear Fiber Optics

Kraych, Adrien E., Suret, Pierre, El, Gennady and Randoux, Stephane (2019) Modulational Instability of a Plane Wave in the Presence of Localized Perturbations: Experiments in Nonlinear Fiber Optics. In: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, 23-27 June 2019, Munich, Germany.

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Abstract

Modulational instability (MI) is a ubiquitous phenomenon in focusing nonlinear media, and consists in the instability of a constant background to long-wavelength perturbations [1,2]. The linear stage of MI is characterized by an exponential growth of all the perturbations falling in the long-wavelength region of the Fourier spectrum [1]. This simple picture ceases however to be valid when the amplitude of the perturbation becomes comparable to the background, i.e. in the nonlinear stage of MI.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	F300 Physics
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	John Coen
Date Deposited:	17 Apr 2020 10:47
Last Modified:	17 Apr 2020 10:47
URI:	http://nrl.northumbria.ac.uk/id/eprint/42818

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