IEEE Photonics Journal (Jan 2015)

25-Gb/s 1310-nm Optical Receiver Based on a Sub-5-V Waveguide-Coupled Germanium Avalanche Photodiode

  • H. T. Chen,
  • J. Verbist,
  • P. Verheyen,
  • P. De Heyn,
  • G. Lepage,
  • J. De Coster,
  • P. Absil,
  • B. Moeneclaey,
  • X. Yin,
  • J. Bauwelinck,
  • J. Van Campenhout,
  • G. Roelkens

DOI
https://doi.org/10.1109/JPHOT.2015.2460116
Journal volume & issue
Vol. 7, no. 4
pp. 1 – 9

Abstract

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We demonstrate low-voltage waveguide-coupled germanium avalanche photodetectors (APDs) with a (wafer-scale mean) gain×bandwidth product of 140 GHz at -5 V by utilizing a 185-nm-thick Ge layer. An optical receiver based on such an APD operating up to 25 Gb/s is demonstrated.

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