Numerical study of a mode-locked fiber ring laser consisting of two SOAs

摘要

In this paper, based on self-reproduction theory, harmonic mode-locked (HML) and rational harmonic mode-locked (RHML) fiber ring lasers consisting of two semiconductor optical amplifiers (SOAs) was numerically researched, respectively. Harmonic mode locking makes a target of obtaining ultra-short pulse, but, in rational harmonic mode locking, it urgently needs to be solved that pulse amplitude becomes uneven with the increase of the order of rational harmonic, which results in the different work conditions of both. After obtaining the optimal work condition, the system parameters effects on the characteristic of HML pulse and the quality of pulse-amplitude equalization in rational harmonic mode locking have been investigated, respectively.