Long-Haul Coupled 4-Core Fiber Transmission over 7,200 Km with Real-Time MIMO DSP

Shohei Beppu*, Masahiro Kikuta, Koji Igarashi, Hiroshi Mukai, Masahiro Shigihara, Yasuo Saito, Daiki Soma, Hidenori Takahashi, Noboru Yoshikane, Takehiro Tsuritani, Itsuro Morita, Masatoshi Suzuki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In this work, we present an experimental demonstration of real-time transoceanic space-division multiplexed transmission with coupled-core multicore fibers. To compensate for modal coupling in the coupled-core multicore fibers, we implement real-time multiple-input multiple-output (MIMO) digital signal processing based on field programmable gate array circuits. Using optical receivers with a real-time MIMO, we demonstrate 16-channel wavelength-division multiplexed coupled four-core fiber transmission over 7200 km. The results show the feasibility of real-time coupled-core multicore fiber transmission.

Original languageEnglish
Pages (from-to)1640-1649
Number of pages10
JournalJournal of Lightwave Technology
Issue number6
Publication statusPublished - 2022 Mar 15
Externally publishedYes


  • Long-haul transmission
  • mode-division multi- plexing
  • real-time digital signal processing

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Long-Haul Coupled 4-Core Fiber Transmission over 7,200 Km with Real-Time MIMO DSP'. Together they form a unique fingerprint.

Cite this