Abstract

Fabricating a surface nanoscale axial photonics (SNAP) microresonator with a specific profile is a challenging and important issue since its advent. We propose a powerful approach for the flexible fabrication of the SNAP structures with arbitrary profiles by a femtosecond laser. Our method is to design the profile of the length distribution of the inscribed lines to match the profile of the required SNAP microresonator, and to combine it with other fabrication parameters to precisely control the radius variation of the SNAP structure. In experiments, we demonstrate the design and fabrication of the SNAP structures with the parabolic, semi-parabolic, and bat profiles. The developed approach is expected to be universal for the fabrication of complex high Q-factor SNAP structures, which lays the groundwork for exploring the versatile performances of the SNAP devices.

© 2021 Optical Society of America

Rectangular SNAP microresonator fabricated with a femtosecond laser

Qi Yu, Sajid Zaki, Yong Yang, Nikita Toropov, Xuewen Shu, and Misha Sumetsky
Opt. Lett. 44(22) 5606-5609 (2019)

Accurate fabrication of SNAP microresonators via a femtosecond laser with multidimensional optimized parameters

Qi Yu, Zhen Zhang, and Xuewen Shu
Opt. Express 29(5) 7724-7735 (2021)

Configurable SNAP microresonators induced by axial pre-strain-assisted CO₂ laser exposure

Qi Yu, Zhenxiang Xu, Zuowei Xu, Yulong Wang, Haosen Li, Qi Miao, Hongtao Li, Xuewen Shu, and Liang Lu
Opt. Lett. 49(5) 1357-1360 (2024)

Microresonator devices lithographically introduced at the optical fiber surface

N. Toropov, S. Zaki, T. Vartanyan, and M. Sumetsky
Opt. Lett. 46(7) 1784-1787 (2021)

Fabrication of surface nanoscale axial photonics structures with a femtosecond laser

Fangcheng Shen, Xuewen Shu, Lin Zhang, and M. Sumetsky
Opt. Lett. 41(12) 2795-2798 (2016)