January 01, 2015

Compact InP-based DFB-EAM enabling PAM-4 112 Gb/s transmission over 2 km

  • Achouche M.
  • Bigo S.
  • Blache F.
  • Caillaud C.
  • Charbonnier P.
  • Decobert J.
  • Dupuy J.
  • Faugeron M.
  • Jenneve P.
  • Jorge F.
  • Konczykowska A.
  • Mallecot F.
  • Mardoyan H.
  • Mekhazni K.
  • Mestre Adrover M.
  • Paret J.
  • Pommereau F.
  • Renaudier J.
  • Rios Muller R.

We demonstrate a 56 GBd PAM-4 compact transmitter module integrating in InP a DFB laser and EAM modulator, which exhibits 50 GHz bandwidth, >13 dB extinction ratio and up to 1.5 mW output power. Successful amplifier free 2-km 112-Gb/s transmission is performed using low complexity 3 taps equalization. We also study the trade-off between receiver bandwidth, equalizer length and performance, showing that successfully signal recovery can be achieved with bandwidths as low as 18 GHz when increasing the equalizer length.

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