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Opt Express. 2008 Sep 29;16(20):15741-53.

Dynamics of microring resonator modulators.

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Department of Electrical and Computer Engineering and Institute for Optical Sciences, University of Toronto, Toronto, Ontario, M5S 3G4, Canada.


A dynamic model for the transmission of a microring modulator based on changes in the refractive index, loss, or waveguide-ring coupling strength is derived to investigate the limitations to the intensity modulation bandwidth. Modulation bandwidths approaching the free spectral range frequency are possible if the waveguide-ring coupling strength is varied, rather than the refractive index or loss of the ring. The results illustrate that via controlled coupling, resonant modulators with high quality factors can be designed to operate at frequencies much larger than the resonator linewidth.

[Indexed for MEDLINE]

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