High-speed electro-optic control of the optical quality factor of a silicon microcavity |
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Authors: | Manipatruni Sasikanth Poitras Carl B Xu Qianfan Lipson Michal |
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Affiliation: | School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA. ml292@cornell.edu |
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Abstract: | We demonstrate electro-optic ultrafast control of the optical quality factor of an on-chip silicon microcavity. The micrometer-sized cavity is formed by light confinement between two microring resonators acting as frequency selective mirrors. The ring resonators are integrated into p-i-n junctions enabling ultrafast injection and extraction of carriers. We show tuning of the cavity quality factor from 20,000 to 6,000 in under 100 ps. We demonstrate both high-Q to low-Q and low-Q to high-Q transitions. |
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