Dynamic process of dissipative soliton build-up in mode-locked fiber laser

We experimentally studied the dynamic process of dissipative soliton build-up by dispersive Fourier transform in net normal dispersion cavity. The oscillation of spectral bandwidth and pulse energy before the stabilization of dissipative soliton was observed, the build-up and termination of the double dissipative solitons accompanied with soliton explosion and energy interaction were observed with higher pump power. Simulation of dissipative soliton build-up process was demonstrated through the extended nonlinear Schrödinger equation, negative feedback mechanism was summarized as the reason of the pulse oscillation during the build-up process.