All-optical switching of a single resonance in silicon ring resonators

Abstract

We theoretically investigate a wavelength-selective all-optical switch using Raman-induced loss in a silicon resonator add–drop filter. We show that picojoule control pulses can selectively modulate and “erase” a single cavity resonance from full extinction to greater than 97% transmission while leaving adjacent resonances undisturbed. Full switching is achievable in less than $300\mathrm{ps}$ with only a few hundred femtojoule energy dissipation. This represents, to our knowledge, the first scheme for selective modulation of single resonances of an optical cavity.

© 2011 Optical Society of America

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