Optical solitons and other invariant solutions with fiber Bragg gratings and dispersive reflectivity having parabolic–nonlinear combo nonlinearity.

The current paper addresses the bifurcation analysis and sketches the phase portraits of the dynamical system that emerged from fiber Bragg gratings structure due to parabolic–nonlocal combo nonlinearity. The Lie symmetry analysis led to the corresponding ordinary differential equations that were subsequently analyzed. [ABSTRACT FROM AUTHOR]