Transoceanic transmission of 40\,\times\,117.6 Gb/s PDM-OFDM-16QAM over hybrid large-core/Ultralow-Loss fiber

Shaoliang Zhang, Yequn Zhang, Ming Fang Huang, Fatih Yaman, Eduardo Mateo, Dayou Qian, Lei Xu, Yin Shao, Ivan B. Djordjevic

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


We experimentally demonstrated transmitting 40\,\times\,117.6 Gb/s 16 quadrature amplitude modulation with orthogonal frequency division multiplexing modulation over 10 181 km. The following techniques are applied to achieve error-free transmission: 1) hybrid large-core/ultralow-loss fibers were used for improving received optical signal-to-noise ratio while enhancing fiber nonlinearity tolerance; 2) multiband nonlinearity compensation algorithm was performed to further improve nonlinearity tolerance; 3) the forward error correction (FEC) limit of 5.3 dB provided by the concatenation of hard-decision and soft-decision FEC codes ensures to have error-free transmission after turbo equalizer with memory of three symbols, thus attaining a spectral efficiency of 4.7 b/s/Hz.

Original languageEnglish (US)
Article number6249709
Pages (from-to)498-505
Number of pages8
JournalJournal of Lightwave Technology
Issue number4
StatePublished - 2013


  • 16-quadrature amplitude modulation (16QAM)
  • Long-haul
  • low-density parity-check (LDPC)
  • nonlinearity compensation (NLC)
  • spectral efficiency (SE)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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