Single-Channel 1.92 Tbit/s, 64 QAM Coherent Nyquist Orthogonal TDM Transmission with a Spectral Efficiency of 10.6 Bit/s/Hz

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19 Citations (Scopus)

Abstract

We have proposed a coherent optical Nyquist pulse and its high-speed optical time division multiplexing (OTDM), in which data signals can be transmitted at a bandwidth as low as the baud rate. By taking advantage of the time-domain orthogonality of coherent Nyquist pulses, Nyquist OTDM signals can be demultiplexed with a high SNR, despite a large intersymbol overlap by adopting Nyquist-LO pulses. With this technique, we successfully transmitted a 1.92 Tbit/s, polarization-division-multiplexed 64 quadrature amplitude modulation Nyquist pulse signal over 225 km within a signal bandwidth of 170 GHz, leading to a potential spectral efficiency of as high as 10.6 bit/s/Hz.

Original languageEnglish
Article number7222361
Pages (from-to)768-775
Number of pages8
JournalJournal of Lightwave Technology
Volume34
Issue number2
DOIs
Publication statusPublished - 2016 Jan 15

Keywords

  • Coherent communication
  • Nyquist pulses
  • Optical time division multiplexing (OTDM)
  • Pulse shaping
  • Quadrature amplitude modulation (QAM)
  • Spectral efficiency

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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