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Contact: Tobias Kippenberg
Ecole Polytechnique Fédérale de Lausanne

All-optical Transistor

Caption: This is a false-color scanning electron micrograph of the microresonator used in the study of OMIT. The red top part is a silica toroid; it is supported by a silicon pillar (gray) on a semiconductor chip. The silica toroid serves both, as an excellent optical resonator for photons, and it supports mechanical vibrations (phonons). The mutual coupling of photons and phonons can be harnessed to control the propagation of light all-optically.

Credit: T. Kippenberg / EPFL

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Related news release: All-optical transistor

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