Fig. 1. Fiber ring laser experimental setup

Fig. 2. (a) Autocorrelation function and (b) optical spectrum recorded at output 3.

Fig. 3. (a) Compressed pulse pair and (b) optical spectrum recorded at output 1.

Fig. 4. Scheme of the numerical model

Fig. 5 (a) Trajectories of pulse pairs. The point denoted by a red dot acts as an attractor. (b) Optical spectrum corresponding to the stationary solution of the attractor, as taken after the polarizer. The parameters of the simulation are : L_SMF=3.6, L_EDF=1.88, Γ=3, γ=0.2, Q_sat=8, g₀=1.5, β=0.08, θ=142°.

Fig. 6. Comparison of simulated field profiles along the dispersion-managed cavity. (a): in normal path-averaged dispersion regime, (b) in anomalous path-averaged dispersion regime. red colour is used for propagation in the EDF, whereas blue is for propagation in the SMF. The parameters used in (a) are the same as in Fig.5. The parameters used in (b) are: L_EDF=1.6 m, L_SMF=4.8 m, Γ=3, D=-2.3, γ=0.09, g₀=1.5, Q_sat=0.9, β=0.05, θ=70°. Time and distance are in real units, whereas one E-field unit is equal to 28 (Watt)^1/2.