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

Tatsunori Omiya; Masato Yoshida; Masataka Nakazawa

doi:10.1364/OE.21.002632

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

Tatsunori Omiya, Masato Yoshida, Masataka Nakazawa

Tohoku University

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

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 language	English
Pages (from-to)	2632-2641
Number of pages	10
Journal	Optics Express
Volume	21
Issue number	3
DOIs	https://doi.org/10.1364/OE.21.002632
Publication status	Published - 2013 Feb 11

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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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