  Optical skyrmions are an emerging class of structured light with
sophisticated particle-like topologies with great potential for revolutionizing
modern informatics. However, the current generation of optical skyrmions
involves complex or bulky systems, hindering their development of practical
applications. Here, exploiting the emergent "lab-on-fiber" technology, we
demonstrate the design of a metafiber-integrated photonic skyrmion generator.
We not only successfully generated high-quality optical skyrmions from
metafibers, but also experimentally verified their remarkable properties, such
as regulability and topological stability with deep-subwavelength features
beyond the diffraction limits. Our flexible and fiber-integrated optical
skyrmions platform paves the avenue for future applications of
topologically-enhanced remote super-resolution microscopy and super-robust
information transfer.
