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Primeur weekly 2017-10-09

Special

2017 - Another year on the Road to Exascale: The Post-Moore era ...

Focus

Outsourcing your data centre to Verne Global in Iceland reduces costs and benefits climate ...

Draft work programme for 2018 - 2020 of the European Horizon 2020 funding programme shows strong commitment to HPC and exascale with over 450 million euro funding available ...

Exascale supercomputing

IDEAS goes big: Fostering better software development for exascale ...

Assessing regional earthquake risk and hazards in the age of exascale ...

Quantum computing

Bristol scientists pinpoint the singularity for quantum computers ...

New 'building material' points toward quantum computers ...

Focus on Europe

Call now open for ISC 2018 research papers: Submission ends December 22, 2017 ...

Project TopWing published top innovative results in Nature ...

PRACE 15th Call continues to award outstanding research in HPC ...

PRACE met future scientists at EUCYS 2017 ...

Dutch National Big Data Infrastructure will boost pre-competitive research ...

Middleware

Bright Computing rolls out tiered partner programme for resellers in North and South America ...

Hardware

CENATE names new director ...

University of South Dakota gets HPC cluster for research computing ...

Mellanox enables the next generation of software-defined data centre networks with BlueField SmartNIC network adapters ...

Discovery and innovation to quicken with supercomputer's $1-million upgrade ...

Applications

Cell modelling tool makes complex calculations user-friendly ...

Purdue professor wins Department of Defense computing award ...

Columbia researchers observe exotic quantum particle in bilayer graphene ...

MareNostrum supercomputer has allocated 20 million hours of calculation to the Nobel Prize for Physics winning project ...

The world-record 53.3 Tb/s optical switching capacity for data-centre networks ...

Chemists teach computer programme to model forces between atoms accurately ...

The Cloud

New Oracle Exadata X7 delivers in-memory performance from shared storage ...

Oracle unveils world's first autonomous database Cloud ...

The world-record 53.3 Tb/s optical switching capacity for data-centre networks

This is a concept diagram of high-speed 7-core-joint optical switch system. Credit: National Institute of Information and Communications Technology.6 Oct 2017 Gothenburg - The National Institute of Information and Communications Technology (NICT) has successfully demonstrated a world-record for switching capacity of 53.3 Tb/s for short-reach data-centre networks. This demonstration makes use of spatial division multiplexing (SDM) over multi-core optical fibers (MCFs) and a newly developed high-speed spatial optical switch system, enabling full packet-granularity. The team believes this newly developed data-centre network provides a significant improvement of network efficiency and end-to-end energy consumption per bit compared to today's optical circuit, fully-electronic packet switching networks. The results of this demonstration were selected for presentation as a post-deadline paper at the prestigious 43rd European Conference on Optical Communications (ECOC) in Gothenburg, Sweden, on September 21, 2017.

Due to a continuous increase of network traffic demand, the capacity of optical networks using standard single mode fiber (SMF) is approaching its physical limits. SDM technology, including MCFs, has been proposed to alleviate the capacity limits imposed by SMFs. Furthermore, it is also important to reduce the granularity of optical networks. Currently, commercial optical networks can switch optical wavelength channels that operate continuously in time. However, the actual information is transmitted over the network in smaller units, referred to as packets. Hence, the capability to transmit these packets directly on the optical domain can increase the overall network efficiency and replacing electronic switching with optical switching can also reduce the total end-to-end energy consumption per bit.

In this work, NICT developed a high-speed 7-core-joint optical switching system that can switch all the cores of a 7-core MCF simultaneously with an ultrafast switching speed of 80 ns. The system consists of multiple electro-absorption (EA) optical switch elements with several nanoseconds switching speed. It also contains a switch controller, capable of reading the destination address of packets and controlling multiple EA switches simultaneously. The optical switching system can be used in an optical network switching node to realize several functions. Using this optical switching system, NICT built a testbed of a time-slotted optical network, capable of achieving full packet granularity. This testbed used 64 wavelength channels, modulated at 32 Giga Baud with polarization division multiplexing (PDM) quadrature phase shift keying (QPSK). This delivers a nominal capacity of 53.3 tera bits per second. In the testbed, three MCF segments were used: a 19-core 28 km fiber, a 19-core 10 km fiber, and a 7-core 2 km fiber. On each fiber, 7-cores were used in this demonstration to carry information signals. The results of this work were presented as a post-deadline paper on the prestigious 43rd European Conference on Optical Communications (ECOC), held in Gothenburg, Sweden, from September 17, 2017 until September 21, 2017.

In the future, the team hopes to increase the network capacity by developing new optical switches with even faster response, lower insertion loss and flatter frequency response, and to investigate coherent burst-mode receivers with high-order modulation formats for greater spectral efficiency.

José Manuel Delgado Mendinueta, Satoshi Shinada, Ruben S. Luís, Yusuke Hirota, Hideaki Furukawa, Hiroaki Harai and Naoya Wada are the authors of "Experimental Demonstration of a 53 Tb/s Coherent SDM-TDM Add/Drop/Through Optical Network with Time-division Spatial Super-channels and High-speed Joint Switching System", published in the Proceedings of the 43rd European Conference on Optical Communications (ECOC), September 2017, paper Th.PDP.B.3.
Source: National Institute of Information and Communications Technology - NICT

Back to Table of contents

Primeur weekly 2017-10-09

Special

2017 - Another year on the Road to Exascale: The Post-Moore era ...

Focus

Outsourcing your data centre to Verne Global in Iceland reduces costs and benefits climate ...

Draft work programme for 2018 - 2020 of the European Horizon 2020 funding programme shows strong commitment to HPC and exascale with over 450 million euro funding available ...

Exascale supercomputing

IDEAS goes big: Fostering better software development for exascale ...

Assessing regional earthquake risk and hazards in the age of exascale ...

Quantum computing

Bristol scientists pinpoint the singularity for quantum computers ...

New 'building material' points toward quantum computers ...

Focus on Europe

Call now open for ISC 2018 research papers: Submission ends December 22, 2017 ...

Project TopWing published top innovative results in Nature ...

PRACE 15th Call continues to award outstanding research in HPC ...

PRACE met future scientists at EUCYS 2017 ...

Dutch National Big Data Infrastructure will boost pre-competitive research ...

Middleware

Bright Computing rolls out tiered partner programme for resellers in North and South America ...

Hardware

CENATE names new director ...

University of South Dakota gets HPC cluster for research computing ...

Mellanox enables the next generation of software-defined data centre networks with BlueField SmartNIC network adapters ...

Discovery and innovation to quicken with supercomputer's $1-million upgrade ...

Applications

Cell modelling tool makes complex calculations user-friendly ...

Purdue professor wins Department of Defense computing award ...

Columbia researchers observe exotic quantum particle in bilayer graphene ...

MareNostrum supercomputer has allocated 20 million hours of calculation to the Nobel Prize for Physics winning project ...

The world-record 53.3 Tb/s optical switching capacity for data-centre networks ...

Chemists teach computer programme to model forces between atoms accurately ...

The Cloud

New Oracle Exadata X7 delivers in-memory performance from shared storage ...

Oracle unveils world's first autonomous database Cloud ...