Back to Table of contents

Primeur weekly 2018-04-16

Focus

GO FAIR initiative to create implementation networks for stewardship of data ...

Quantum computing

Atos Quantum Learning Machine can now simulate real qubits ...

UCSB/Google researchers in quantum computing professor John Martinis' group outline their plan for quantum supremacy ...

New qubit now works without breaks ...

Prototype of most advanced quantum memory presented by two Kazan universities ...

The thermodynamics of computing ...

Focus on Europe

GÉANT confirms Erik Huizer as CEO ...

ISC launches Travel Grant Programme to enable students and young researchers to attend the conference ...

Student develops gaming technology for environmental and scientific research ...

Prof. Dr. Xiaoxiang Zhu wins the 2018 PRACE Ada Lovelace Award for HPC ...

Academia and industry collaborate to drive UK supercomputer adoption ...

Middleware

Queen Mary University of London HPC cluster performance increases several orders of magnitude, saving time and cost ...

Hardware

University of Texas hires next director of no. 1 ranked computational institute ...

James Ang joins Pacific Northwest National Laboratory as chief scientist for computing ...

Fujitsu commences sales of PRIMERGY x86 server aimed at data centre companies ...

Tohoku University deploys vSMP Foundation for "The Supercomputer System" ...

Chinese leading weather research institute selected Mellanox InfiniBand, replacing OmniPath in an existing data centre ...

Valleytronics discovery could extend limits of Moore's Law ...

Top HPC clusters and workstations for AI, ML developed by Nor-Tech ...

Demonstration of world record: 159 Tb/s transmission over 1,045 km with 3-mode fiber ...

Applications

Boston partners with Excelero and Pixit Media at NAB to demo joint solution for media workflows ...

Fujitsu launches "Heart Explorer" to study heart behaviour ...

U.S. Department of Energy supports doctoral research into on-site analysis of supercomputer simulations ...

Scientists use machine learning to speed discovery of metallic glass ...

Machine learning could help search for gravitational waves ...

Artificial Intelligence can now detect gravitational waves ...

Jon Bashor retires after 27 years of service to national labs ...

Research and software: perspectives from different communities ...

The background hum of space could reveal hidden black holes ...

How to catch a fish genome with Big Data ...

Translational research community debates on the EGA and its impact on health ...

The Cloud

Capitalizing on the opportunity of hybrid cloud in HPC ...

St. Jude Cloud launches for researchers worldwide ...

Demonstration of world record: 159 Tb/s transmission over 1,045 km with 3-mode fiber

13 Apr 2018 Tokyo - The National Institute of Information and Communications Technology (NICT) Network System Research Institute and Fujikura Ltd. developed a 3-mode optical fiber, capable of wide-band wavelength multiplexing transmission with standard outer diameter (0.125 mm) that can be cabled with existing equipment. They have successfully demonstrated a transmission experiment over 1045 km with a data-rate of 159 Tb/s. Multimode fibers have different propagation delays between optical signals in different modes that makes it difficult to simultaneously satisfy large data-rates and long distance transmission. This achievement shows that such limitations may be overcome.

Converting the results to the product of data-rate and distance, which is a general indicator of transmission capability, results in 166 Pb/s×km. This is the world record in a standard outer diameter few-mode optical fiber and the largest data-rate over 1000 km for any kind of standard-diameter fiber. In order to achieve the transmission capacity of 159 Tb/s, mode multiplexing is used in combination with 16-QAM (quadrature-amplitude modulation), which is a practical high-density multilevel modulation optical signal, for all 348 wavelengths and MIMO (multiple-input and multiple-output) enables unscrambling of mixed modal signals even after transmission over more than 1000 km. This shows that standard outer diameter multimode fibers can be used for communication of high capacity optical backbone transmission systems.

The results of this demonstration were selected for presentation as a post-deadline paper at the 41st Optical Fiber Communication Conference and Exhibition (OFC2018).

In order to cope with ever-increasing communication traffic, research on large-scale optical transmission using new types of optical fiber exceeding the limit of conventional optical fiber and its application is actively conducted all over the world. The main new types of optical fibers studied are multicore fibers in which multiple passages (cores) are arranged in an optical fiber and multimode fibers that support multiple propagation modes in a single core with a larger core diameter. Up to now, successful transmission experiments of large capacity and long distance have been reported for multicore fiber, but it was considered that transmission which satisfied both large capacity and long distance simultaneously was difficult in multimode fiber.

In this work, NICT constructed a transmission system using an optical fiber developed by Fujikura and successfully transmitted over 1045 km with a data-rate of 159 Tb/s. Converting the results to the product of transmission data-rate and distance, which is a general indicator of transmission capability, is 166 Pb/s×km. This is about twice the world record so far in the few-mode fibers.

The transmission system consists of the following element technologies.

  • 3-mode optical fiber with standard outer diameter 0.125 mm
  • 348 wavelength optical comb light source
  • 16-QAM multi-level modulation technology equivalent to 4 bits / single polarization symbol
  • Separation technology of multimode optical signals with different propagation speeds in fiber (MIMO processing)

NICT succeeded in transmitting over 1045 km using a standard 3-mode optical fiber. When laying of standard outer diameter optical fibers takes place, the existing equipment can be used and the practical use at an early stage is promising. Also, ultimate large-capacity transmission will become possible in the future if combined with multicore technology, which is researched by NICT in cooperation with industry, university and government in Japan.

The team will continue to research and develop future optical communication infrastructure technologies which can smoothly accommodate traffic such as Big Data and 5G network services.

The results of this work were presented as a post deadline paper on the prestigious 41st Optical Fiber Communication Conference and Exhibition (OFC2018), held in San Diego, USA from March 11, 2018 until March 15, 2018.

Source: National Institute of Information and Communications Technology - NICT

Back to Table of contents

Primeur weekly 2018-04-16

Focus

GO FAIR initiative to create implementation networks for stewardship of data ...

Quantum computing

Atos Quantum Learning Machine can now simulate real qubits ...

UCSB/Google researchers in quantum computing professor John Martinis' group outline their plan for quantum supremacy ...

New qubit now works without breaks ...

Prototype of most advanced quantum memory presented by two Kazan universities ...

The thermodynamics of computing ...

Focus on Europe

GÉANT confirms Erik Huizer as CEO ...

ISC launches Travel Grant Programme to enable students and young researchers to attend the conference ...

Student develops gaming technology for environmental and scientific research ...

Prof. Dr. Xiaoxiang Zhu wins the 2018 PRACE Ada Lovelace Award for HPC ...

Academia and industry collaborate to drive UK supercomputer adoption ...

Middleware

Queen Mary University of London HPC cluster performance increases several orders of magnitude, saving time and cost ...

Hardware

University of Texas hires next director of no. 1 ranked computational institute ...

James Ang joins Pacific Northwest National Laboratory as chief scientist for computing ...

Fujitsu commences sales of PRIMERGY x86 server aimed at data centre companies ...

Tohoku University deploys vSMP Foundation for "The Supercomputer System" ...

Chinese leading weather research institute selected Mellanox InfiniBand, replacing OmniPath in an existing data centre ...

Valleytronics discovery could extend limits of Moore's Law ...

Top HPC clusters and workstations for AI, ML developed by Nor-Tech ...

Demonstration of world record: 159 Tb/s transmission over 1,045 km with 3-mode fiber ...

Applications

Boston partners with Excelero and Pixit Media at NAB to demo joint solution for media workflows ...

Fujitsu launches "Heart Explorer" to study heart behaviour ...

U.S. Department of Energy supports doctoral research into on-site analysis of supercomputer simulations ...

Scientists use machine learning to speed discovery of metallic glass ...

Machine learning could help search for gravitational waves ...

Artificial Intelligence can now detect gravitational waves ...

Jon Bashor retires after 27 years of service to national labs ...

Research and software: perspectives from different communities ...

The background hum of space could reveal hidden black holes ...

How to catch a fish genome with Big Data ...

Translational research community debates on the EGA and its impact on health ...

The Cloud

Capitalizing on the opportunity of hybrid cloud in HPC ...

St. Jude Cloud launches for researchers worldwide ...