Gap solitons with cubic-quartic dispersive reflectivity and parabolic law of nonlinear refractive index

Abstract

. A full spectrum of optical gap solitons in fiber Bragg gratings with cubic– quartic dispersive reflectivity is identified. The nonlinear refractive index structure is of parabolic law type. When the modulus of ellipticity approaches unity, the limiting approach to the retrieved Jacobi’s elliptic functions reveals the soliton solutions.