Bound States of Dispersion-Managed Solitons From Single-Mode Yb-Doped Fiber Laser at Net-Normal Dispersion

The bound states of multiple dispersion-managed solitons (DMSs) were experimentally investigated from a net-normal-dispersion passive mode-locked Yb-doped fiber laser based on the nonlinear polarization rotation mechanism through the proper adjustment of the waveplate at certain pump power. The long-term operation of the bound double DMSs has been experimentally verified and reveals the possible application in the fields of optical communication. In addition, we observed multiple bound solitons and the bound states of the multiple solitons whose intensity autocorrelation traces were similar to that operating at single and double bound soliton states. By means of the grating pairs at the outside laser cavity for pulse compression, the bound states of multiple solitons below 1 ps can be experimentally retrieved. The observed results in this paper illustrate that the passive mode-locked fiber laser around zero cavity dispersion can provide the platform to explore the fundamental physics of soliton dynamics.