Numerical simulation of the beam self-cleaning process in a multimode graded-index fibre during propagation of a pump wave and a Stokes component,Quantum Electronics

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Numerical simulation of the beam self-cleaning process in a multimode graded-index fibre during propagation of a pump wave and a Stokes component
Quantum Electronics ( IF 0.9 ) Pub Date : 2020-12-09 , DOI: 10.1070/qel17456
O.S. Sidelnikov ₁ , E.V. Podivilov _{1,

2} , S.A. Babin _{1,

2} , S. Wabnitz _{1,

3} , M.P. Fedoruk _{1,

4}

Affiliation

A model of coupled modes is proposed, which makes it possible to describe the propagation of a pump wave and a Stokes component in a multimode graded-index fibre. A decrease in the depression in the centre of the profile of the pump wave intensity distribution as a result of the influence of Kerr effects and random linear coupling of modes is demonstrated.

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