Dynamic fabrication method of SNAP microresonators

Fuente: arXiv
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Autori principali: Wang, Zijie, Crespo-Ballesteros, Manuel, Collins, Christopher, Yang, Yong, Zhang, Qi, Zhang, Xiaobei, Sumetsky, Michael
Natura: Preprint
Pubblicazione: 2025
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author Wang, Zijie
Crespo-Ballesteros, Manuel
Collins, Christopher
Yang, Yong
Zhang, Qi
Zhang, Xiaobei
Sumetsky, Michael
author_facet Wang, Zijie
Crespo-Ballesteros, Manuel
Collins, Christopher
Yang, Yong
Zhang, Qi
Zhang, Xiaobei
Sumetsky, Michael
contents 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 -- CO$_2$ 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 $\sim 10 $nm is introduced with an error of $\sim 0.1 $angstrom. We suggest that the remaining fabrication errors can be attributed to laser power fluctuations.
format Preprint
id arxiv_https___arxiv_org_abs_2504_04786
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Dynamic fabrication method of SNAP microresonators
Wang, Zijie
Crespo-Ballesteros, Manuel
Collins, Christopher
Yang, Yong
Zhang, Qi
Zhang, Xiaobei
Sumetsky, Michael
Optics
Surface Nanoscale Axial Photonics (SNAP) technology has demonstrated the record subangstrom fabrication precision of optical microresonators and resonant photonic circuits at the optical fiber surface. However, fabrication errors arising from fluctuations of temperature, inscription parameters, alignment inconsistencies, and other factors did not allow researchers to achieve the subangstrom precision without sophisticated postprocessing. Here we show that the key fabrication method of SNAP structures -- CO$_2$ 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 $\sim 10 $nm is introduced with an error of $\sim 0.1 $angstrom. We suggest that the remaining fabrication errors can be attributed to laser power fluctuations.
title Dynamic fabrication method of SNAP microresonators
topic Optics
url https://arxiv.org/abs/2504.04786