OPTICS AND SPECTROSCOPY, cilt.130, sa.4, ss.244-247, 2022 (SCI-Expanded)
The current work recovers a perturbed bright 1-soliton solution to the governing model that maintains generalized quadratic-cubic nonlinearity. The perturbation terms appear with full intensity. The semi-inverse variational principle secures this soliton when all of the known approaches fail, in this regard.