Long-Haul Dense Space Division Multiplexed Transmission over Low-Crosstalk Heterogeneous 32-Core Transmission Line Using Partial Recirculating Loop System

Takayuki Mizuno, Kohki Shibahara, Feihong Ye, Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, Yong-min Jung, Klaus Pulverer, Hirotaka Ono, Yoshiteru Abe, Makoto Yamada, Kunimasa Saitoh, Shoichiro Matsuo, Kazuhiko Aikawa, Marc Bohn, David J. Richardson, Yutaka Miyamoto, Toshio Morioka

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Abstract

In this paper, we present long-haul 32-core dense space division multiplexed (DSDM) unidirectional transmission over a single-mode multicore transmission line. We developed a low-crosstalk heterogeneous 32-core fiber with a square lattice arrangement, and a novel partial recirculating loop system. The span crosstalk of the 51.4-km 32-core transmission line was less than −34.5 dB. This allowed the transmission of polarization division multiplexed 16 quadrature amplitude modulation (PDM-16QAM) signals through all 32-cores over a long distance exceeding a thousand km. We demonstrate 32-core DSDM 20 wavelength division multiplexed (WDM) PDM-16QAM transmission over 1644.8 km with a high aggregate spectral efficiency of 201.46 b/s/Hz. Additionally, we examine the effect of crosstalk on the transmission performance of each core, and show that the Q-penalty has strong correlation with inter-core crosstalk.
Original languageEnglish
JournalJournal of Lightwave Technology
Volume35
Issue number3
Pages (from-to)488 - 498
ISSN0733-8724
DOIs
Publication statusPublished - 2017

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Keywords

  • Coherent communications
  • Crosstalk
  • Long-haul transmission
  • Multicore fiber (MCF)
  • Optical Communication Systems
  • Optical fiber communication
  • Optical fibers
  • Space division multiplexing (SDM)
  • Spectral efficiency
  • Wavelength division multiplexing (WDM)

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