Family of optical solitons for perturbed Fokas-Lenells equation

Abstract The current study investigates optical solitons with the perturbed Fokas-Lenells equation under the influences of analytical procedures, namely, the modified extended tangent hyperbolic function method, extended rational sinh-cosh method, and extended rational sin-cos method. Dark soliton, hole-like dark soliton, chirped-like dark soliton, and kink/antikink-like cuspon are revealed.