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Published October 29, 2004 | Published
Journal Article Open

Electrical thermo-optic tuning of ultrahigh-Q microtoroid resonators


The ability to tune resonant frequency in optical microcavities is an essential feature for many applications. Integration of electrical-based tuning as part of the fabrication process has been a key advantage of planar microresonant devices. Until recently, the combination of these features has not been available in devices that operate in the ultrahigh-Q regime where device quality factors (Q) can exceed 100 million. In this letter, we demonstrate an electrically tunable resonator on a chip with ultrahigh-quality factors. Futhermore, the devices have demonstrated tuning rates in excess of 85 GHz/V2 and are capable of tuning more than 300 GHz.

Additional Information

©2004 American Institute of Physics (Received 23 August 2004; accepted 4 October 2004) This work was supported by DARPA and the Caltech Lee Center.

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Published - ARMapl04.pdf


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