Implicit quiescent optical solitons for perturbed Fokas–Lenells equation with nonlinear chromatic dispersion and a couple of self-phase modulation structures by Lie symmetry

The paper retrieves implicit quiescent optical solitons to the perturbed Fokas–Lenells equation that is considered with nonlinear chromatic dispersion and a couple of self-phase modulation structures. They are quadratic-cubic and quadratic-cubic-quartic forms along with their respective generalized counterparts. The results from linear temporal evolution as well as generalized temporal evolution formats are presented. Lie symmetry analysis is the integration tool implemented in the work.