OPTIK, cilt.228, 2021 (SCI-Expanded)
This paper employs the modified Kudryashov's approach and addendum to Kudryashov's scheme for extracting optical soliton solutions for highly dispersive nonlinear perturbation Schrodinger equation having Kudryashov's arbitrary form with sextic-power law refractive index and generalized non-local laws. Bright, dark, singular solitons and combo bright-singular solitons are recovered. The modified Kudryashov's scheme gives dark, singular solitons and combo bright singular solitons, while the addendum to Kudryashov's approach secures bright and singular solitons.