Nature CommunicationsRealization of a Dirac-vortex topological photonic crystal fiberQuanhao NiuBei YanLei ShenHao LinXi ZhangZhenyu WanMutian XuHui ZhangJie LuoLei ZhangPerry Ping ShumZhen GaoJian Wang2025-12-11Full textDOI https://doi.org/10.1038/s41467-025-65222-z