High-finesse nanofiber Fabry-Pérot resonator in a portable storage container

The full paper is at: https://doi.org/10.1063/5.0208963

We have published a technology paper related to nanofiber cavity production in the Review of Scientific Instruments [1].

Advancing Nanofiber Cavity Fabrication and Preservation Techniques

Our nanofiber cavity fabrication method has been developed and refined by our CSO and Prof. Aoki at Waseda University over the last decades. This pioneering work encompasses optimal nanofiber design [2], the fabrication of low-loss nanofiber [3] and the development of low-loss fiber Bragg grating cavities [4].

In this paper, we build upon previous work to develop pristine and portable storage methods for a high-finesse nanofiber cavity. By filling the container with dry, clean nitrogen gas, we prevent contamination of the nanofiber during storage, thereby achieving an additional optical loss of less than 0.08% over a week. This portable container facilitates the streamlined mass production of nanofiber cavity devices directly on the production line and enables seamless transportation to research and development sites across various locations.

References:

[1] S. Horikawa, S. Yang, T. Tanaka, T. Aoki, and S. Kato, High-finesse nanofiber Fabry–Pérot resonator in a portable storage container, Rev. Sci. Instrum. 95, 073103 (2024).
[2] R. Nagai and T. Aoki, Ultra-low-loss tapered optical fibers with minimal lengths, Opt. Express 22, 28427 (2014).
[3] S. K. Ruddell, K. E. Webb, M. Takahata, S. Kato, and T. Aoki, Ultra-low-loss nanofiber Fabry–Perot cavities optimized for cavity quantum electrodynamics, Opt. Lett. 45, 4875 (2020).
[4] S. Kato and T. Aoki, Single-frequency fiber Fabry–Perot Brillouin laser, Opt. Lett. 47, 5000 (2022).