High-order polarization vortex spatial solitons

We investigate the formation of high-order polarization vortex spatial solitons. The high-order polarization vortex solitons have novel polarization states which are different from fundamental polarization vortex solitons and have rotational symmetry only in intensity. It is proved that the polarization vortex solitons cannot carry vortex phase. The existence domain and dynamical characteristic of these high-order polarization vortex solitons in Bessel optical lattices are discussed in detail. -- Highlights: ► It is proved that the polarization vortex solitons cannot carry vortex phase. ► Polarization vortex solitons formed by cylindrical vector beams must be first-order solitons. ► New high-order polarization vortex solitons are investigated in Bessel optical lattices.