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.
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Zervas, M.N.
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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.
More information
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
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Date deposited: 31 Jan 2008
Last modified: 16 Mar 2024 03:46
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Author:
Y. Panitchob
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