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Published August 3, 2009 | Supplemental Material + Published
Journal Article Open

Thermal instability of a compound resonator


We investigate the thermal and Kerr nonlinearity in a system of two optically-coupled silica microtoroid resonators experimentally and theoretically. A model for two coupled oscillators describing nonlinear resonance curves is developed. Stability of the static solutions is analyzed. It is shown that thermal nonlinearity is responsible for driving the eigenfrequencies of the two resonators apart, making the normal modes of the system unstable as the pump power grows. The red-detuned normal mode becomes unstable for certain pumping powers.

Additional Information

© 2009 OSA. Original Manuscript: June 29, 2009. Manuscript Accepted: July 22, 2009. Revised Manuscript: July 22, 2009. Published: July 29, 2009. We would like to acknowledge the support from DARPA. ISG thanks A. B. Matsko, M. L. Gorodetsky, A. E. Fomin and Tao Lu for helpful discussions.

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Published - Grudinin2009p5636Opt_Express.pdf

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