400 Gbit/s 256 QAM-OFDM transmission over 720 km with a 14 bit/s/Hz spectral efficiency by using high-resolution FDE

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Abstract

We demonstrate 400 Gbit/s frequency-division-multiplexed and polarization-division-multiplexed 256 QAM-OFDM transmission over 720 km with a spectral efficiency of 14 bit/s/Hz by using high-resolution frequency domain equalization (FDE) and digital back-propagation (DBP) methods. A detailed analytical evaluation of the 256 QAM-OFDM transmission is also provided, which clarifies the influence of quantization error in the digital coherent receiver on the waveform distortion compensation with DBP.

Original languageEnglish
Pages (from-to)2632-2641
Number of pages10
JournalOptics Express
Volume21
Issue number3
DOIs
Publication statusPublished - 2013 Feb 11

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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