We demonstrate a low-voltage waveguide Si-Ge APD that integrates a distributed Bragg reflector (DBR). Quantum efficiency has been improved from 60% to 90% at 1550nm while still achieving a 25GHz bandwidth. The device under 64Gbps PAM4 modulation showed 30% increase in OMA, which enables 1.2dB improvement in receiver sensitivity.

© 2020 The Author(s)

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