Cubic–quartic optical soliton perturbation with Chen– Lee–Liu equation by sine-Gordon equation approach

This paper addresses a modified version of the regular known Chen–Lee–Liu equation where the familiar chromatic dispersion is replaced by a collective count of third–order dispersion as well as fourth–order dispersion effects to compensate the low count of chromatic dispersion. The model is studied for scalar case as well as birefringent fibers for the first time. Hamiltonian type perturbation terms are considered with maximum intensity. Bright, dark and singular solitons with the newly formulated model are extracted by the aid of sine–Gordon equation approach for the first time in the field of nonlinear optics.