• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Tuesday, August 5, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Chemistry

Demonstration of world record transmission capacity over a 38-core 3-mode optical fiber

Bioengineer by Bioengineer
February 14, 2020
in Chemistry
Reading Time: 3 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

Transmission of 10.66 Pb/s with a spectral efficiency of 1158.7 bit/s/Hz over a 38-core 3-mode fiber

IMAGE

Credit: National Institute of Information and Communications Technology


[Points]

  • Transmission of 10.66 Pb/s with a spectral efficiency of 1158.7 bit/s/Hz over a 38-core 3-mode fiber
  • A low-DMD, high core-count few-mode fiber, adoption of 256- and 64-QAM modulation
  • Drastic increase of data-rate per fiber for intra- and inter data-center communication

[Abstract]

The National Institute of Information and Communications Technology (NICT, President: TOKUDA Hideyuki, Ph.D.), Sumitomo Electric Industries, Ltd. (Sumitomo Electric, President: INOUE Osamu) and Optoquest Co., Ltd. (Optoquest, President: HIGASHI Noboru) succeeded in experimental transmission at 10.66 peta-bit per second, achieving a spectral efficiency of 1158.7 bits per second/Hz. This result exceeded the previous record of 10.16 peta-bit per second.

In this experiment, we develop an optical fiber that supports the transmission of three transverse modes in 38 cores with reduced relative propagation delays between modes, and demonstrated its suitability for high spectral efficiency modulation, namely 256- and 64-quadrature amplitude modulation (QAM). The achieved data rate per fiber increased by a factor of more than 100 over existing commercial transmission systems, demonstrating a potential to significantly reduce the number of fibers required for data transmission over short distances, such as intra- and inter data-center traffic. This result will be presented at the Optical Fiber Communication Conference (OFC 2020) to be held on March 8-12, 2020, in San Diego.

[Background]

In 2008, NICT established a study group on Extremely Advanced Optical Transmission Technologies to enhance collaboration between industry, universities and the government, engaging in pioneering research and development. The research by the collaborative group is at a high level in fierce global competition, exemplified by a past data-rate demonstration record of 10.16 peta-bit per second in a 19-core 6-mode fiber. To achieve larger capacities, a fiber with a larger number of cores or modes is required. However, there are several technical challenges in increasing them, such as the mechanical reliability of fibers or the complexity of signal processing.

[Achievements]

For this transmission experiment, Sumitomo Electric developed a 38-core 3-mode fiber, Optoquest developed a 38-core multiplexer, and NICT performed a transmission experiment of 10.66 peta-bit per second over 13 km distance.

When transmitting different data-streams over different transverse modes in each core, the signals typically experience strong mixing and require digital signal processing (DSP) to separate the signals at the receiver. To reduce the complexity of the DSP, it is important to reduce the propagation delay differences between the modes (DMD: Differential Mode Delay). For this experiment, we fabricated a 38-core 3-mode fiber with reduced propagation delays between modes in each core for simplifying DSP and achieved a delay difference of 0.6-3.0 nanoseconds. Furthermore, loss variation between different modes (MDL: Mode-Dependent Loss), can impair signal quality and reduce achievable data-rate. In the experiment, both the optical fiber and the core- and mode-multiplexers were optimized for a reduced MDL of 5-8.5 dB for most of the fiber cores. Depending on the MDL and DMD in each core, highly spectrally efficient modulation formats of 256- and 64-QAM were selected for transmission leading to data-rates between 279 tera-bit per second and 298 tera-bit per second in each of the 38 cores.

Due to the transmission of a total of 114 spatial channels (38 cores x 3 modes), we increased the transmission capacity by a factor of more than 100 compared to the current standard transmission systems and hence these results demonstrate a potential to significantly reduce the number of fibers required in short-range, ultra-high-capacity systems, such as those for intra- and inter data-center connections.

[Future Prospects]

NICT will continue to promote the effort for early social implementation of the technologies, and the cutting-edge/innovative research and development toward the realization of the ultimate performance of the multi-core/multi-mode optical fiber transmission systems.

###

Media Contact
HIROTA Sachiko
[email protected]

Original Source

https://www.nict.go.jp/en/press/2020/02/14-1.html

Tags: Computer ScienceElectrical Engineering/ElectronicsHardwareMultimedia/Networking/Interface DesignOpticsResearch/DevelopmentTechnology/Engineering/Computer ScienceTelecommunications
Share12Tweet8Share2ShareShareShare2

Related Posts

blank

Hundreds of Satellite Systems Discovered Orbiting Dwarf Galaxies in New Survey

August 5, 2025
Harnessing Nature: Exploring Bush Basil Companion Plants for Organic Pest Control

Harnessing Nature: Exploring Bush Basil Companion Plants for Organic Pest Control

August 5, 2025

Diastereodivergent Routes to Multi-Substituted Cycloalkanes

August 5, 2025

UofL Study Reveals Amplified Liver Damage from Combined Exposure to Alcohol and “Forever Chemicals”

August 5, 2025
Please login to join discussion

POPULAR NEWS

  • blank

    Neuropsychiatric Risks Linked to COVID-19 Revealed

    72 shares
    Share 29 Tweet 18
  • Overlooked Dangers: Debunking Common Myths About Skin Cancer Risk in the U.S.

    61 shares
    Share 24 Tweet 15
  • Predicting Colorectal Cancer Using Lifestyle Factors

    46 shares
    Share 18 Tweet 12
  • Dr. Miriam Merad Honored with French Knighthood for Groundbreaking Contributions to Science and Medicine

    47 shares
    Share 19 Tweet 12

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

Enamel Rod-End Patterns: New Forensic ID Tool?

Lab Study of α-1,6-Glucosylated Steviol Glycosides Metabolism

Illuminating Solutions: Harnessing Sunlight and Oil to Tackle Pollution

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.