飞秒激光微纳加工光纤功能器件研究进展

Optical fiber functional devices have huge application prospects in micromechanical structures, biomedical, ocean detection, aerospace, and other fields because of their unique advantages such as small size, high sensitivity, anti-electromagnetic interference, corrosion resistance, easy integration, and multiplexing. Femtosecond laser with ultra-narrow pulse widths can effectively avoid thermal effects and can achieve high-precision optical functional structures when interacting with materials, which has been used in fiber functional device manufacturing. At present, various three-dimensional micro-nano fiber functional devices with good stability and high resolution have been prepared by femtosecond laser direct writing technology, femtosecond laser two-photon polymerization technology, and femtosecond laser-induced water breakdown technology. Herein, we introduce the recent development of fiber grating, fiber interferometer, optical waveguide, and other micro-optical devices. Further, we analyze the future development directions and prospects of femtosecond laser micro-nano processing technology.