Single- and Multi-soliton Generation in ANDi-laser with Tunable Spectral Filtration

We investigated the influence of spectral filtration inside all-normal dispersion (ANDi) fiber mode-locked laser on dissipative soliton formation. The circular fiber cavity with semiconductor saturable absorber mirror (SESAM) and tunable spectral filter was chosen as experimental platform. It was found that central wavelength of the spectral filter significantly influences on whether single or multi-soliton regime would be generated. Depending on matching between net spectral losses of the laser cavity and filter spectral profile it is possible to generate from 1 to 3 solitons inside optical bunch.