Yirui Wang, Minglong Li, Haodong Zhu, Qiuhong Min, Yuanhao Lou, Dan Wu, Jian Ma, Zhenyu Yang, Ming Zhao, and Yuanjie Pang, "Fresnel lens three-dimensionally printed on the facet of a single mode fiber for trapping, manipulation, and spectrum," Opt. Lett. 49, 3259-3262 (2024)