Multiple-Pulse Operation and Bound States of Solitons in Passive Mode-Locked Fiber Lasers

Figure 15

Spectra of ultrashort pulse described by (8). (a) Spectral profiles of established solitons with different chirps: (1) 𝛼=0, (2) 𝛼=1, (3) 𝛼=3, (4) 𝛼=5. (b) Variation of the chirp 𝛼 on the plane of the nonlinear-dispersion parameters (𝜉,𝜃). For the dashed line 𝛼=0, for the solid curves 𝛼=±√2, the arrows point the directions of maximal increase in the chirp 𝛼. The spectral profiles in the figure (b) demonstrate typical spectra for the three areas separated from each other by the solid curves.

(a)

(b)