Abstract
We present a novel method based on optical fibre tapering for fabrication of Surface Nanoscale Axial Photonics (SNAP) devices with parabolic profiles with an unprecedentedly large number of axial eigenmodes. Tapering of a commercial 125 μm single-mode optical fibre to a 30 μm diameter waist by laser brushing creates a SNAP bottle microresonator with parabolic radius variation in the centre of the tapered region. Ideal parabolic resonators should demonstrate equal spacing between resonances. Our spectral measurement of the parabolic profile shows spacing of ∼6 GHz with 10% deviation over a bandwidth of 2.5 THz containing up to 400 axial eigenfrequencies. This new discovery for the creation of SNAP parabolic microresonator devices is important for fabrication of miniature delay lines, buffers and frequency comb generators. Characterisation of our exemplar microresonators is briefly explored, particularly for broadband frequency comb generators which require equidistant frequency spacing. Further investigations include scaling of the parabolic feature with tapering process parameters, repeatability testing, and the fabrication of more complex shapes.
Original language | English |
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Title of host publication | Micro-Structured and Specialty Optical Fibres V |
Publisher | SPIE |
Volume | 10681 |
ISBN (Electronic) | 9781510618886 |
DOIs | |
Publication status | Published - 9 May 2018 |
Event | Micro-Structured and Specialty Optical Fibres V 2018 - Strasbourg, France Duration: 25 Apr 2018 → 26 Apr 2018 |
Publication series
Name | Proceedings of SPIE |
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Publisher | SPIE |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Micro-Structured and Specialty Optical Fibres V 2018 |
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Country/Territory | France |
City | Strasbourg |
Period | 25/04/18 → 26/04/18 |
Bibliographical note
Copyright 2018 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.Keywords
- bottle resonator
- frequency comb generation
- harmonic potential
- parabolic profile
- Surface Nanoscale Axial Photonics
- taper
- Whispering gallery mode
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Dive into the research topics of 'Discovery of parabolic SNAP microresonators produced in fibre tapering'. Together they form a unique fingerprint.Student theses
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Slow Cooking of Photonic Microresonators
Author: Gardosi, G. I., Mar 2022Supervisor: Sumetsky, M. (Supervisor) & Webb, D. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy
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