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Experimental demonstration of coherent perfect absorption in a silicon photonic racetrack resonator

Jacob M. Rothenberg, Christine P. Chen, Jason J. Ackert, Jerry I. Dadap, Andrew P. Knights, Keren Bergman, Richard M. Osgood, and Richard R. Grote

Abstract

We present the first experimental demonstration of coherent perfect absorption (CPA) in an integrated device using a silicon racetrack resonator at telecommunication wavelengths. Absorption in the racetrack is achieved by Si+-ion-implantation, allowing for phase controllable amplitude modulation at the resonant wavelength. The device is measured to have an extinction of 24.5 dB and a quality-factor exceeding 3000. Our results will enable integrated CPA devices for data modulation and detection.

© 2016 Optical Society of America

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