Steady states of dissipative optical solitons in periodically domained semiconductor laser waveguides with a quasi-linear gain and a fast-relaxing saturable absorption

Abstract

The results of studying the steady states for bright and dark dissipative optical solitons, appearing in a single-mode semiconductor laser waveguide being periodically domained in a direction of passing the waves, are presented. These types of solitons occur due to reshaping the incoming optical pulses via the passive mode-locking process in traveling-wave regime. The relations between the pulse parameters and the waveguides' properties are chosen in such a way that the mode-locking process is incoherent in behavior that leads to the phase decay of the incoming pulses. The analysis demonstrates that bright and dark (with the shocked derivative in the shape of envelope) dissipative optical solitons can be supported by such waveguide with a quasi-linear gain and a fast-relaxing saturable absorption.