December 28, 2017

Integrated Hybrid Wavelength-tunable III-V/Silicon transmitter based on ring-assisted Mach-Zehnder interferometer modulator

  • Brenot R.
  • De Valicourt G.
  • Dong P.
  • Eggleston M.
  • Kim K.
  • Lee S.
  • Zhu C.

We demonstrate a wavelength-tunable hybrid III-V/Si transmitter based on a Vernier laser with more than 30 nm tuning range and two microring modulators nested in a Mach-Zehnder interferometer. This transmitter circuit has versatile operating modes. It can be used for OOK generation based on low drive voltage push-pull ring modulators and for QPSK generation where BPSK signal is generated by each ring. We reported the first hybrid III-V/Si integrated wavelength-tunable transmitter based on high-speed ring modulators (BW~23GHz), which can cover more than 30 nm. OOK signal generation with better signal integrity, lower drive voltage and lower chirp is demonstrated as well as 80 Gbit/s PDM-QPSK signal transmission over 100 km with the integrated hybrid transmitter as well as a fully packaged silicon-based coherent receiver.

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