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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 29,
  • Issue 4,
  • pp. 491-498
  • (2011)

Transmission of 96 $\,\times\,$100-Gb/s Bandwidth-Constrained PDM-RZ-QPSK Channels With 300% Spectral Efficiency Over 10610 km and 400% Spectral Efficiency Over 4370 km

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Abstract

We demonstrated that simple pre-filtering at the transmitter to constrain the channel bandwidth together with a maximum a posteriori probability (MAP) detection algorithm can significantly improve spectral efficiency (SE). 96$\,\times\,$100-Gb/s bandwidth-constrained polarization-division-multiplexing return- to-zero-QPSK channels were transmitted with 300% SE over 10 610 km using 52-km spans of 150-$\mu$m $^{2}$ fiber and simple single-stage erbium-doped fiber amplifiers without any Raman amplification. We also achieved 400% SE over 4370 km using similar techniques.

© 2011 IEEE

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