448 Gbit/s, 32 Gbaud 128 QAM coherent transmission over 150 km with a potential spectral efficiency of 10.7 bit/s/Hz

Keisuke Kasai, Yixin Wang, David Odeke Otuya, Masato Yoshida, Masataka Nakazawa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We realized a single-carrier, polarization-multiplexed 32 Gbaud 128 QAM coherent transmission. Digital frequency-domain equalization enabled us to achieve waveform distortion compensation of a wideband data signal with high frequency resolution. Thus, we successfully increased the QAM multiplicity to 128 at 32 Gbaud, and transmitted 448 Gbit/s data over 150 km with a potential spectral efficiency of 10.7 bit/s/Hz. This is the highest multiplicity and spectral efficiency yet achieved in a coherent QAM transmission at a baud rate of as high as 32 Gbaud.

Original languageEnglish
Pages (from-to)28423-28429
Number of pages7
JournalOptics Express
Volume23
Issue number22
DOIs
Publication statusPublished - 2015 Nov 2

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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