High sensitivity 10Gb/s Si photonic receiver based on a low-voltage waveguide-coupled Ge avalanche photodetector.

@article{Chen2015HighS1,
  title={High sensitivity 10Gb/s Si photonic receiver based on a low-voltage waveguide-coupled Ge avalanche photodetector.},
  author={Hong Tao Chen and Jochem Verbist and Peter Verheyen and Peter De Heyn and Guy Lepage and Jeroen de Coster and Philippe Absil and Xiaogang Yin and Johan Bauwelinck and Joris Van Campenhout and Gunther Roelkens},
  journal={Optics express},
  year={2015},
  volume={23 2},
  pages={815-22}
}
We demonstrate low-voltage germanium waveguide avalanche photodetectors (APDs) with a gain × bandwidth product above 100GHz. A photonic receiver based on such a Ge APD, including a 0.13μm SiGe BiCMOS low-noise trans-impedance amplifier and a limiting amplifier, is realized. A 5.8dB sensitivity improvement is demonstrated at -5.9V bias at an avalanche gain of 6 through bit error ratio measurements. The absolute sensitivity in avalanche mode is -23.4dBm and -24.4dBm at a bit error ratio of 1 × 10… CONTINUE READING