Comment on "Optical solitons for 2D-NLSE in multimode fiber with Kerr nonlinearity and its modulation instability"

被引：0
|
作者：
Kengne, Emmanuel [1 ]
机构：
[1] Zhejiang Normal Univ, Coll Phys & Elect Informat Engn, Jinhua 321004, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2024年
关键词：
Nonlinear Schr & ouml; dinger equation; optical solitons; Jacobi elliptic function; modulation instability;
D O I：
10.1142/S0217984925500204
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Most recently, Baber et al. (Optical solitons for 2D-NLSE in multimode fiber with Kerr nonlinearity and its modulation instability, Mod. Phys. Lett. B (2024) 2450341, doi:10.1142/S021798492450341X2450341-1) claimed to have obtained exact solutions of a two-dimensional nonlinear Schr & ouml;dinger equation with an instantaneous Kerr nonlinearity that governs beam movement within a multimode optical fiber featuring a parabolic index shape, using the Jacobi Elliptic Function Expansion. Additionally, they have analyzed the modulation instability for the underlying model. It is the aim of this comment to point out that all results found in that work and published in the journal Mod. Phys. Lett. B (doi:10.1142/S021798492450341X2450341-1) are all erroneous, from the exact solutions of the considered equation to the modulation instability of the underlying model.
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