Generation and transformation of dark solitons, anti-dark solitons and dark double-hump solitons

Dark solitons are widely applied in optical fiber communication system due to the characteristics of strong anti-interference and slow attenuation. The coupled nonlinear Schrodinger equations with the higher-order effects of third-order dispersion, self-steepening and self-frequency shift, which is modeled the propagation of ultrashort optical pulse through a multimode fiber or birefringence fiber, have been investigated analytically. By using the Hirota method, exact dark solitons, anti-dark solitons and dark double-hump solitons are constructed. The transmission characteristics of those solitons are analyzed, and the conditions for the transformation of states between them are discussed. Those presented results provide a new idea for the transformation of dark soliton states.

Automated summary

This article investigates the transmission characteristics of ultrashort optical pulses in fibers by analyzing the coupled nonlinear Schrodinger equations. The results provide a new idea for the transformation of dark soliton states.