Chirped w-shaped optical solitons of Chen–Lee–Liu equation.
Triki, Houria Zhou, Qin Moshokoa, Seithuti P. Ullah, Malik Zaka Biswas, Anjan Belic, Milivoj
Triki, Houria
Zhou, Qin
Moshokoa, Seithuti P.
Ullah, Malik Zaka
Biswas, Anjan
Belic, Milivoj
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Abstract
Propagating chirped soliton solutions for the Chen–Lee–Liu equation also called the derivative nonlinear Schrödinger II equation are investigated by application of the ansatz method.
The model incorporating self-steepening term has many applications in nonlinear optical fibers and plasma physics. A nonlinear differential equation describing the evolution of the
wave amplitude in the nonlinear media is derived by means of the coupled amplitude phase formulation. Special exact chirped soliton solution that takes the shape of “W” is determined
for the first time in presence of all physical effects. It is shown that the nonlinear chirp associated with this type of solitons is crucially dependent on the wave intensity and related to self-steepening and group velocity dispersion parameters. Parametric conditions on system parameters for the existence of the chirped soliton structure are also presented. This soliton solution exists due to a balance among group velocity dispersion and self-steepening effect solely.
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Date
2017-10-13
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Publisher
Elsevier GmbH
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Keywords
Solitons, Chen–Lee–Liu equation, Self-steepening, Nonlinear