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Proceedings Paper

Q-factor and waveguide-sphere separation effects in waveguide-coupled microsphere resonators
Author(s): Y. Panitchob; G. Senthil Murugan; M. N. Zervas; J. S. Wilkinson
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Paper Abstract

Quality-factors of waveguide coupled microsphere resonators of 30 μm 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.

Paper Details

Date Published: 3 April 2008
PDF: 6 pages
Proc. SPIE 6793, International Workshop and Conference on Photonics and Nanotechnology 2007, 67930E (3 April 2008); doi: 10.1117/12.799260
Show Author Affiliations
Y. Panitchob, Univ. of Southampton (United Kingdom)
G. Senthil Murugan, Univ. of Southampton (United Kingdom)
M. N. Zervas, Univ. of Southampton (United Kingdom)
J. S. Wilkinson, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 6793:
International Workshop and Conference on Photonics and Nanotechnology 2007
Preecha P. Yupapin; Wicharn Techitdheera, Editor(s)

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