Stannic
sulfide (SnS2), a latterly developed two-dimensional
(2D) material, has fascinated scientists because it can be widely
applied to materials chemistry, biomedicine, photocatalysis, and so
on. Especially, SnS2 has the advantages of adjustable band
gap and good oxidation resistance, which indicates that this material
has promising potential in nonlinear optics. However, the light interaction
with SnS2 is rarely investigated. In this study, high-quality
SnS2 nanosheets (Ns) developed through a liquid phase exfoliation
approach have been applied in ultrafast photonics for nonlinear processes.
This fabrication approach can greatly increase the damage threshold
of the SnS2 saturable absorber (SA). Furthermore, the SnS2 SA device is applied to an erbium-doped fiber laser (EDFL)
to obtain soliton molecules with different orders. Ultimately, eleventh-order
soliton molecules, the highest order of soliton molecules through
SnS2, are generated with a soliton separation of 8 ps and
a spectral modulation period of around 1 nm. The above experimental
results indicate that SnS2 has broad application prospects
in the fields of mode-locked fiber laser and optical fiber communication.