January 01, 2018

138 Tbit/s Mode- and Wavelength Multiplexed Transmission over 6-Mode Graded-Index Fiber

  • Alvarado-Zacarias J.
  • Alvarez-Aguirre R.
  • Amezcua Correa R.
  • Chen H.
  • Fontaine N.
  • Gruner-Nielsen L.
  • Jensen R.
  • Koonen T.
  • Lingle R.
  • Okonkwo C.
  • Ryf R.
  • Sun Y.
  • Van Weerdenburg J.

We report on the multiplexing of 12 spatial channels and 120 wavelength channels in the C-band, each carrying 16-QAM symbols at 30 Gbaud over graded-index few-mode fiber. A combination of multiple fiber spools with positive and negative modal dispersion values are exploited to form a 59 km link with 0.35 ns differential mode group delay. The link is placed inside a 6-fold synchronized recirculating loop transmission setup. Photonic lanterns with low insertion and mode dependent loss are employed to excite the 6 spatial modes in the few-mode fiber. A net transmission rate of 138 Tbit/s at a spectral efficiency of 34.91 bit/s/Hz over 590 km is demonstrated.

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