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Waveguide-Integrated Ge/Si Avalanche Photodetector with 105GHz Gain-Bandwidth Product

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Abstract

We report the first demonstration of a waveguide-integrated avalanche photodetector using Group-IV heterostructure materials. Such device achieved a responsivity of ~0.8A/W at unity gain and an impressive gain-bandwidth product of ~105GHz at 1550nm photon wavelength.

© 2010 IEEE Communications Society, IEEE Photonics Society, OSA, Telcordia

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