High Q-factor reconfigurable microresonators induced in side-coupled optical fibres

Victor Vassiliev; Michael Sumetsky

doi:10.1038/s41377-023-01247-7

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High Q-factor reconfigurable microresonators induced in side-coupled optical fibres

Original Articles

- High Q-factor reconfigurable microresonators induced in side-coupled optical fibres
- Light: Science & Applications Vol. 12, Issue 9, Pages: 1867-1876(2023)
- Affiliations：
  
  Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK
- Author bio：
  
  Michael Sumetsky (m.sumetsky@aston.ac.uk)
- Funds：
- DOI：10.1038/s41377-023-01247-7
  CLC：
- Published：30 September 2023，
  
  Published Online：18 August 2023，
  
  Received：05 April 2023，
  
  Revised：26 July 2023，
  
  Accepted：28 July 2023
- Accepted：
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Vassiliev, V. & Sumetsky, M. High Q-factor reconfigurable microresonators induced in side-coupled optical fibres. Light: Science & Applications, 12, 1867-1876 (2023).
DOI：

Vassiliev, V. & Sumetsky, M. High Q-factor reconfigurable microresonators induced in side-coupled optical fibres. Light: Science & Applications, 12, 1867-1876 (2023). DOI： 10.1038/s41377-023-01247-7.

摘要

Abstract

High Q-factor monolithic optical microresonators found numerous applications in classical and quantum optical signal processing

microwave photonics

ultraprecise sensing

as well as fundamental optical and physical sciences. However

due to the solid structure of these microresonators

attaining the free spectral range tunability of most of them

critical for several of these applications

was

so far

unfeasible. To address this problem

here we experimentally demonstrate that the side-coupling of coplanar bent optical fibres can induce a high Q-factor whispering gallery mode optical microresonator. By changing the curvature radius of fibres from the centimetre order to the millimetre order

we demonstrate fully mechanically reconfigurable optical microresonators with dimensions varying from the millimetre order to 100-micron order and free spectral range varying from a picometre to ten picometre order. The developed theory describes the formation of the discovered microresonators and their major properties in a reasonable agreement with the experimental data. The new microresonators may find applications in cavity QED

microresonator optomechanics

frequency comb generation with tuneable repetition rate

tuneable lasing

and tuneable processing and delay of optical pulses.

关键词

Keywords

references

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