Optical solitons in fibre bragg gratings with third-and fourth-order dispersive reflectivities
Ukrainian Journal of Physical Optics, Volume 22, No. 4, Year 2021
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For the first time in the field of nonlinear optics, we address cubic–quartic solitons appearing in the fibre Bragg gratings with dispersive reflectivity for four different cases of nonlinear refractive-index structures. A complete spectrum of single solitons, together with some straddled solitons, emerges from the integration scheme adopted by us, which is the approach of sine–Gordon equation.