257-Tbit/s Weakly Coupled 10-Mode C + L-Band WDM Transmission

Daiki Soma*, Shohei Beppu, Yuta Wakayama, Koji Igarashi, Takehiro Tsuritani, Itsuro Morita, Masatoshi Suzuki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


Partial multiple-input multiple-output (MIMO)-based weakly coupled mode-division multiplexing (MDM) transmission is proposed to reduce the MIMO matrix size in MDM. This technique can mitigate the burden of MIMO processing for high-order few-mode fiber (FMF) transmission. In this paper, we first show that modal XT can be sufficiently suppressed over the C+L band using a weakly coupled FMF and a highly mode-selective multiplexer/demultiplexer. Next, 10-mode-multiplexed 336-WDM transmission of dual-carrier 12-Gbaud dual-polarization-quadrature phase-shift keying signals over a 48-km weakly coupled FMF using only 2 × 2 or 4 × 4 partial MIMOs is demonstrated. To the best of our knowledge, in this experiment, we achieved a record fiber capacity of 257 Tbps with an aggregate spectral efficiency of 30.5 bit/s/Hz in single-core fiber transmission.

Original languageEnglish
Article number8255558
Pages (from-to)1375-1381
Number of pages7
JournalJournal of Lightwave Technology
Issue number6
Publication statusPublished - 2018 Mar 15
Externally publishedYes


  • Few-mode fiber (FMF)
  • high-capacity transmission
  • mode-division multiplexing (MDM)
  • multiple-input multiple-output (MIMO)
  • space-division multiplexing (SDM)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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