All-fiber-based selective mode multiplexer and demultiplexer for weakly-coupled mode-division multiplexed systems

Koji Igarashi*, Kyung Jun Park, Takahiro Tsuritani, Itsuro Morita, Byoung Yoon Kim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We show all-fiber-based selective mode multiplexers and demultiplexers for weakly-coupled mode-division multiplexed systems. We fabricate a set of six-mode multiplexer and demultiplexer based on fiber mode selective couplers, and experimentally evaluate the performance for the six-mode dual-polarization (DP) quadrature phase shift keying (QPSK) optical signals. In the mode multiplexer and demultiplexer, the mode couplings between the lower three modes and the higher three modes are suppressed to be less than −20 dB, which enables us to apply partial 6×6 MIMO equalizers even for the six-mode demultiplexing. For the six-mode DP-QPSK signals, the penalty of optical signal-to-noise ratio by replacing the full 12×12MIMO to the partial 6×6 MIMO is suppressed by less than 1 dB.

Original languageEnglish
Pages (from-to)58-62
Number of pages5
JournalOptics Communications
Volume408
DOIs
Publication statusPublished - 2018 Feb 1
Externally publishedYes

Keywords

  • Fiber mode selective coupler
  • Mode division multiplexing
  • Mode multiplexer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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