Highly Dispersive Optical Solitons in the Absence of Self-Phase Modulation by Lie Symmetry.

The paper revisits highly dispersive optical solitons that are addressed by the aid of Lie symmetry followed by the implementation of the Riccati equation approach and the improved modified extended tanh-function approach. The soliton solutions are recovered and classified. The conservation laws are also recovered and the corresponding conserved quantities are enlisted. [ABSTRACT FROM AUTHOR]