Cai, Ming and Painter, Oskar and Vahala, Kerry J. (2000) Observation of Critical Coupling in a Fiber Taper to a Silica-Microsphere Whispering-Gallery Mode System. Physical Review Letters, 85 (1). pp. 74-77. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:CAIprl00
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We present the observation of critical coupling in a high-Q fused-silica microsphere whispering-gallery mode resonator coupled to a fiber taper. Extremely efficient and controlled power transfer to high-Q (∼10^7) resonators has been demonstrated. Off-resonance scattering loss was measured to be less than 0.3%. On-resonance extinction in transmitted optical power through the fiber coupler was measured as high as 26 dB at the critical coupling point. This result opens up a range of new applications in fields as diverse as near-field sensing and quantum optics.
|Additional Information:||©2000 The American Physical Society Received 17 December 1999 This work was supported by DARPA and the Office of Naval Research. K.J.V. thanks A. Yariv for helpful discussions.|
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|Deposited On:||02 Mar 2006|
|Last Modified:||26 Dec 2012 08:47|
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