Switchable Generation of Multipulse Patterns of Noise-Like Pulse and Dissipative Soliton Resonance in a Fiber Laser

We report on the switchable generation of versatile patterns of multiple noise-like pulse (NLP) and dissipative soliton resonance (DSR) pulses in a dual-pump figure-eight mode-locked fiber laser.Benefiting from the change of saturation power influenced by pump power intercoupling, harmonic DSR pulses, dual-pulse DSR, dual-pulse and tri-pulse NLP are formed depending on different pump power combinations and intra-cavity polarization states.We find that the NLP pulse profile can turn from h-shape to triangular-shape after splitting.The dual-wavelength spectrum of the pulse, consisting of an obvious stokes line, can tune its center from 1075 to 1097 nm.This type of fiber laser may be helpful for further in-depth study on the underlying dynamics of multiple NLP and DSR pulses.