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Conferences > ECEOC > 2022 > Th2E > Th2E.5
  • European Conference on Optical Communication (ECOC) 2022
  • Technical Digest Series (Optica Publishing Group, 2022),
  • paper Th2E.5

Single Lane Beyond 400 Gbit/s Optical Direct Detection Based on a Sidewall-doped Ge-Si Photodetector

Xiao Hu, Dingyi Wu, Ye Liu, Min Liu, Jia Liu, Hongguang Zhang, Yuguang Zhang, Daigao Chen, Lei Wang, Xi Xiao, and Shaohua Yu

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Abstract

We present a photodetector in which the sloped sidewalls of germanium are carefully doped. The 3-dB bandwidth > 55 GHz and responsivity of 1 A/W are demonstrated. Single lane direct detection of record-high speed 290 Gbit/s PAM-4 and 408 Gbit/s PAM-8 optical signals are achieved.

© 2022 The Author(s)

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