Wang Jia, Lin Chupao, Liao Changrui, Gan Zongsong, Li Zhengyong, Liu Shen, Xu Lei, Wang Ying, He Jun, Wang Yiping
Opt Express. 2018 Feb 19;26(4):3732-3737. doi: 10.1364/OE.26.003732.
A new method for microfiber Bragg gratings (μ-FBGs) fabrication by means of two-photon polymerization in photosensitive resin is reported. Such polymerized μ-FBGs were cured along with the surface of microfibers without any damage or distortion to the substrate. The laser intensity was optimized to improve the spectral properties of the polymerized gratings. The refractive index measurement was performed and the maximum sensitivity obtained is ~207 nm/RIU at the refractive index value of 1.440 with the fiber diameter being 1.7 μm. This work opens a new idea for optical structure integration and further optical functionality integration.
报道了一种通过在光敏树脂中进行双光子聚合来制造微光纤布拉格光栅（μ-FBGs）的新方法。这种聚合的μ-FBGs与微光纤表面一起固化，而不会对基底造成任何损坏或变形。优化了激光强度以改善聚合光栅的光谱特性。进行了折射率测量，在光纤直径为1.7μm、折射率值为1.440时获得的最大灵敏度约为207 nm/RIU。这项工作为光学结构集成和进一步的光学功能集成开辟了新思路。
