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Multi-Band Transmission over Space-Division Multiplexing Optical Fibers

Research Project

Project/Area Number 21K14165
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionNational Institute of Information and Communications Technology

Principal Investigator

Rademacher Georg  国立研究開発法人情報通信研究機構, ネットワーク研究所フォトニックICT研究センター, 主任研究員 (20795661)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
KeywordsOptical Fiber / Space Division Multiplex / Raman amplification / SDM
Outline of Research at the Start

Current optical transmission systems are reaching fundamental throughput limitations. Two main approaches are currently being researched to increase the data-rates in optical fiber transmission systems: space-division multiplexing, where signals are transmitted in different spatial channels of a fiber and multi-band transmission, where the spectral region for transmission is extended beyond the traditional C-band around 1.55μm wavelength. The focus of this project is to investigate the compatibility of novel SDM fibers with the transmission of novel spectral transmission windows.

Outline of Final Research Achievements

Current optical transmission systems are reaching fundamental throughput limitations. Two main approaches are currently being researched to increase the data-rates in optical fiber transmission systems: space-division multiplexing, where signals are transmitted in different spatial channels of a fiber and multi-band transmission, where the spectral region for transmission is extended beyond the traditional C-band around 1.55μm wavelength. The focus of this project was to investigate the compatibility of novel SDM fibers with the transmission of novel spectral transmission windows. We performed various experiments using wideband Raman amplification in novel few-mode fibers and published the results at the optical fiber communications conference 2022. We also performed an experiment using erbium doped fiber amplifiers for C- and L-bands to show record transmission of more than 3.5 Peta-bit/s over a 55-mode multi-mode fiber.

Academic Significance and Societal Importance of the Research Achievements

近年、通信トラヒックは国内外で年率数10%の割合で増大を続けており、将来の通信インフラを持続的に維持するため、光伝送システムの増強が喫緊の課題となっている。現在、波長多重技術やディジタルコヒーレント技術によって光ファイバ1本あたり数10テラビット/秒もの伝送容量が得られるようになったが、高強度の光信号と光ファイバ間の非線形相互作用により、伝送容量の増加は容易ではない。本研究では、マルチコアファイバやマルチモードを用いた空間多重伝送技術と、従来のCバンドに加えてL、Sバンドを利用するマルチバンド伝送技術との間の互換性を確認し、将来の光伝送システムの伝送容量増加の可能性を示した。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (4 results)

All 2023 2022 2021

All Presentation (3 results) (of which Int'l Joint Research: 3 results) Funded Workshop (1 results)

  • [Presentation] 3.56 Peta-bit/s C+L Band Transmission over a 55-mode Multi-Mode Fiber2023

    • Author(s)
      Georg Rademacher, Ruben S. Luis, Benjamin J. Puttnam, Nicolas K. Fontaine, Mikael Mazur, Haoshuo Chen, Roland Ryf, David T. Neilson, Daniel Dahl, Joel Carpenter, Pierre Sillard, Frank Achten, Marianne Bigot, Jun Sakaguchi, and Hideaki Furukawa
    • Organizer
      European Conference on Optical Communications (ECOC)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of Wideband Distributed Raman Amplification in a Few-Mode Fiber Link2022

    • Author(s)
      Georg Rademacher, Ruben S. Luis, Benjamin J. Puttnam, Juan Carlos Alvarado Zacarias, Rodrigo Amezcua-Correa, Kazuhiko Aikawa, Yoshinari Awaji, and Hideaki Furukawa
    • Organizer
      Optical Fiber Communications conference (OFC) 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of Wideband Distributed Raman Amplification in a Few-Mode Fiber Link2021

    • Author(s)
      Rademacher Georg、Luis Ruben S.、Puttnam Benjamin J.、Zacarias Juan Carlos Alvarado、Amezcua-Correa Rodrigo、Aikawa Kazuhiko、Awaji Yoshinari、Furukawa Hideaki
    • Organizer
      Optical Fiber Communication Conference (OFC)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Funded Workshop] Future optical communications (FOCS) 20232023

    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2024-01-30  

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