Journal
OPTICS COMMUNICATIONS
Volume 250, Issue 4-6, Pages 428-433Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2005.02.054
Keywords
microsphere resonators; snom; coupling efficiency; whispering-gallery modes
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In this paper, we demonstrate a novel method for optimizing the in- and out-coupling of light confined in the fundamental high-Q whispering-gallery mode of a microsphere resonator via an external prism coupler. The technique relies on the use of a near-field probe to map the modes of the resonator and to obtain topographical information at the same time. We demonstrate the feasibility and efficiency of this technique by applying it to a sphere with a radius of 59 mu m. (c) 2005 Elsevier B.V. All rights reserved.
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