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Optomechanically induced non-reciprocity in microring resonators

TitleOptomechanically induced non-reciprocity in microring resonators
Publication TypeJournal Article
Year of Publication2012
AuthorsM. Hafezi, and P. Rabl
JournalOptics Express
Date Publishedmar
KeywordsCoherent optical effects, Isolators, No Fellows, Optomechanics

We describe a new approach for on-chip optical non-reciprocity which makes use of strong optomechanical interaction in microring resonators. By optically pumping the ring resonator in one direction, the optomechanical coupling is only enhanced in that direction, and consequently, the system exhibits a non-reciprocal response. For different configurations, this system can function either as an optical isolator or a coherent non-reciprocal phase shifter. We show that the operation of such a device on the level of single-photon could be achieved with existing technology.