Cubic-quartic optical soliton perturbation and conservation laws with Kudryashov's law of refractive index

This paper secures cubic-quartic optical solitons of Kudryashov's equation with Hamiltonian perturbations that appear with maximum intensity. Bright, dark, singular and combo singular soliton solutions are recovered with F-expansion scheme. The conserved quantities are obtained by implementing multiplier approach. (C) 2020 Elsevier B.V. All rights reserved.