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NASA NTRS · 20210001036

Dispersion compensation in whispering gallery modes

Maleki, L.·Savchenkov, A. A.·Ilchenko, V. S.·Matsko, A. B.
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Abstract

We show that manipulation by a spatial profile of refractive index of a circularly symmetric dielectric cavity results in a novel way of fine tuning frequency separations as well as spatial localizations of high-Q whispering gallery modes excited in the cavity. The method enables dispersion compensation in the modes (spectrum equalization), diminishes the quality-factor limitation by surface roughness and contamination, and enables critical coupling to ultra-high-Q modes without maintaining an air-gap with evanescent couplers.

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Maleki, L., Savchenkov, A. A., Ilchenko, V. S., Matsko, A. B.. 2002-01-01. Dispersion compensation in whispering gallery modes. https://ntrs.nasa.gov/citations/20210001036

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