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Q-factor and waveguide-sphere separation effects in waveguide-coupled microsphere resonators

Q-factor and waveguide-sphere separation effects in waveguide-coupled microsphere resonators
Q-factor and waveguide-sphere separation effects in waveguide-coupled microsphere resonators
Quality-factors of waveguide coupled microsphere resonators of 30µm diameter are measured. A Teflon buffer layer is deposited on the waveguide to separate the microsphere from the waveguide and the effect of this separation on the measured quality-factor is discussed. The whispering-gallery mode propagation along the cavity of the microsphere as well as the optical path lengths of the modes are determined; the experimental and theoretical data are compared and discussed. A five-fold increase of the Q-factor was obtained by increasing the sphere-waveguide separation.
microspheres, whispering-gallery modes, waveguides, integrated optics
Panitchob, Y.
c7e4a8b3-3346-48ad-9a7e-a5a43fdd9889
Murugan, G.S.
a867686e-0535-46cc-ad85-c2342086b25b
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Panitchob, Y.
c7e4a8b3-3346-48ad-9a7e-a5a43fdd9889
Murugan, G.S.
a867686e-0535-46cc-ad85-c2342086b25b
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca

Panitchob, Y., Murugan, G.S., Zervas, M.N. and Wilkinson, J.S. (2007) Q-factor and waveguide-sphere separation effects in waveguide-coupled microsphere resonators. International Workshop and Conference on Photonics and Nanotechnology (ICPN 2007), Pattaya, Thailand. 16 - 18 Dec 2007. 6 pp . (doi:10.1117/12.799260).

Record type: Conference or Workshop Item (Paper)

Abstract

Quality-factors of waveguide coupled microsphere resonators of 30µm diameter are measured. A Teflon buffer layer is deposited on the waveguide to separate the microsphere from the waveguide and the effect of this separation on the measured quality-factor is discussed. The whispering-gallery mode propagation along the cavity of the microsphere as well as the optical path lengths of the modes are determined; the experimental and theoretical data are compared and discussed. A five-fold increase of the Q-factor was obtained by increasing the sphere-waveguide separation.

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e-pub ahead of print date: 2007
Venue - Dates: International Workshop and Conference on Photonics and Nanotechnology (ICPN 2007), Pattaya, Thailand, 2007-12-16 - 2007-12-18
Keywords: microspheres, whispering-gallery modes, waveguides, integrated optics

Identifiers

Local EPrints ID: 50217
URI: http://eprints.soton.ac.uk/id/eprint/50217
PURE UUID: 52a5de5c-7f90-4c64-a6e1-c403bb6202e4
ORCID for G.S. Murugan: ORCID iD orcid.org/0000-0002-2733-3273
ORCID for M.N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059
ORCID for J.S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 31 Jan 2008
Last modified: 15 Jun 2021 01:39

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Contributors

Author: Y. Panitchob
Author: G.S. Murugan ORCID iD
Author: M.N. Zervas ORCID iD
Author: J.S. Wilkinson ORCID iD

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