Dynamic fabrication method of SNAP microresonators

Abstract

Surface Nanoscale Axial Photonics (SNAP) technology has demonstrated the record subangstrom fabrication precision of optical microresonators and resonant photonic circuits at the optical fiber surface. However, fabrication errors arising from fluctuations of temperature, inscription parameters, alignment inconsistencies, and other factors did not allow researchers to achieve the subangstrom precision without sophisticated postprocessing. Here we show that the key fabrication method of SNAP structures – CO2 laser beam optical fiber annealing – suffers from significant fiber displacements which may introduce a few percent fabrication errors. To suppress the effects of misalignment, we develop a dynamic fabrication method employing a translating beam exposure and demonstrate its excellent precision. The effective fiber radius variation of ~ 10 nm is introduced with an error of ~ 0.1 angstrom. We suggest that the remaining fabrication errors can be attributed to laser power fluctuations.

Publication DOI: https://doi.org/10.1364/OL.562332
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Aston University (General)
Funding Information: National Natural Science Foundation of China (62205192, 62405175); China Scholarship Council (202306890079); Leverhulme Trust (RPG-2022-014); Engineering and Physical Sciences Research Council (EP/W002868/1, EP/X03772X/1).
Additional Information: Journal © 2025 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited: https://opg.optica.org/ol/fulltext.cfm?uri=ol-50-9-3042&id=570692
Publication ISSN: 1539-4794
Last Modified: 19 May 2025 16:01
Date Deposited: 02 May 2025 14:18
Full Text Link:
Related URLs: https://opg.opt ... -3042&id=570692 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2025-04-29
Accepted Date: 2025-04-05
Authors: Wang, Zijie
Crespo-Ballesteros, Manuel (ORCID Profile 0000-0002-0592-4726)
Collins, Christopher
Yang, Yong
Zhang, Qi
Zhang, Xiaobei
Sumetsky, Michael (ORCID Profile 0000-0001-7289-3547)

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Access Restriction: Restricted to Repository staff only until 29 April 2026.


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