Tantalum disulfide nanosheets for the generation of polarization domain wall solitons and polarization locked vector solitons

•Nonlinear optical response of tantalum disulfide and it’s applications in ultrafast optics are exploited in our work.•Modulation depth of tantalum disulfide based saturable absorber are as high as 8.5%.•This is the first study of polarization characteristics of a tantalum disulfide based fiber laser.•Both polarization domain wall solitons and polarization locked vector solitons are successfully realized in our work.