Physics

Nonlinear system

Pure mathematics

Mathematics

Mathematical physics

Quadratic equation

Quartic function

Mathematical analysis

Sine

Cubic crystal system

Geometry

Condensed matter physics

Quantum mechanics

Cubic function

sine-Gordon equation

Soliton

Ukrainian Journal of Physical Optics

We reveal cubic-quartic optical solitons with quadratic-cubic nonlinearity for the first time.Both polarization-preserving and birefringent optical fibres are considered.The study is also extended to include the perturbation terms of Hamiltonian type.The integration algorithm adopted in the present work is the method of sine-Gordon equation.

Cubic�quartic optical solitons having quadratic�cubic nonlinearity by sine�Gordon equation approach