Research on focused ion beam processing of 45˚ optical communication fiber mirror and multi-axis displacement detection

Authors:
  • LJLi Jiawei
    Li Jiawei
  • ZDZhang Dingbo
    Zhang Dingbo
  • LXLiu Xu
    Liu Xu
  • LKLi Kuo
    Li Kuo
  • MTMa Tian
    Ma Tian
  • WWWang Weifeng
    Wang Weifeng
  • ZXZhai Xiaowei
    Zhai Xiaowei
  • 西安西安科技大学安全科学与工程学院，陕西西安710054
    西安科技大学安全科学与工程学院，陕西西安710054
  • 中国中国科学技术大学，安徽合肥230026
    中国科学技术大学，安徽合肥230026
  • 蚌埠蚌埠学院电子与电气工程学院，安徽蚌埠233030
    蚌埠学院电子与电气工程学院，安徽蚌埠233030
Publisher website
Google Scholar
Abstract
As a micro-nano machining method, the focused ion beam (FIB) processing can be used to manufacture the nanometer elements and microstructure elements. The whole process of designing and manufacturing the 45° mirror surface at the end of multi-core fiber using focused ion beam processing technology was studied. This mirror surface was manufactured in two steps: the first was the scanning process, which was used to manufacture the rough cut surface; the second was the polishing process, which was used for the surface finish of optical surface. The machined 45˚ mirror surface could be accurately aligned with the fibre core of optical fiber, which avoided related issues of external turning mirror components docking. The experimental test show that the displacement value in two vertical axial directions can be measured by the machined structure with interferometry. The measuring range of the detection displacement is approximately 60 µm, and the absolute measurement error of root-mean-square in X and Y axial directions is 1.75‰ and 1.97‰, respectively. This technology is expected to be used in the detection fields of inner surface and vessels inter wall for precision components.