Functionalized optical fiber tips featuring miniature sizes and diverse functions have broken the limitations of traditional optical fiber with fixed shapes and single materials, significantly enriching the application scenarios in communication, sensing, imaging, and other fields. However, the unconventional shape presents challenges in manufacturing arbitrarily sophisticated 3D micro/nano structures on optical fiber tips. Femtosecond laser 3D nano‐printing (FL‐3DNp) technology injects new vitality into the functionalization of fiber tips due to its high‐precision, customizable structure, and real 3D processing abilities, as well as advantages of non‐vacuum, maskless, and plentiful materials. This paper extensively compares the key performance parameters of various micro‐nano manufacturing technologies for functionalizing optical fiber probes and focuses on the FL‐3DNp technology. In addition, the latest research progresses are systematically presented from the perspective of structure and application. Finally, the current research challenges and future development directions in this emerging field are discussed, aiming at providing scientific and industrial guidance for FL‐3DNp in functionalizing optical fibers.

中文翻译：

---

用于光纤尖端功能化的飞秒激光 3D 纳米打印

功能化光纤尖端尺寸微小、功能多样，打破了传统光纤形状固定、材料单一的限制，极大丰富了通信、传感、成像等领域的应用场景。然而，非常规的形状给在光纤尖端制造任意复杂的 3D 微/纳米结构带来了挑战。飞秒激光3D纳米打印（FL-3DNp）技术以其高精度、可定制的结构和真正的3D加工能力，以及非真空、无掩模、丰富的优势，为光纤尖端的功能化注入了新的活力。材料。本文广泛比较了用于功能化光纤探针的各种微纳制造技术的关键性能参数，并重点讨论了 FL-3DNp 技术。此外，还从结构和应用的角度系统地呈现了最新的研究进展。最后，讨论了这一新兴领域当前的研究挑战和未来的发展方向，旨在为FL-3DNp在光纤功能化方面提供科学和工业指导。