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Primeur weekly 2017-12-04

Quantum computing

Simulating physics ...

Key component for quantum computing invented ...

Quantum-emitting answer might lie in the solution ...

Quantum systems correct themselves ...

NCSA SPIN intern Daniel Johnson published in Classical and Quantum Gravity ...

Focus on Europe

9th Irish Supercomputer List published ...

Gap between research and industry HPC in Ireland widens ...

SURFsara extends its status as Intel Parallel Computing Center for 2018 ...

EXDCI issues Call for Workshops for the European HPC Summit Week 2018 ...

Hardware

Supermicro introduces next-generation storage form factor with new Intel "Ruler" all-flash NVMe 1U server and JBOF ...

New director named at Los Alamos National Laboratory ...

AccelStor empowers all-flash array to advance genomics data analysis ...

New Storage 2020 report outlines vision for future HPC storage ...

Loci adds William Schrader, former PSINet Inc. CEO, to Advisory Board ...

Shantenu Jha named Chair of Brookhaven Lab's Center for Data-Driven Discovery ...

Applications

ORNL-designed algorithm leverages Titan to create high-performing deep neural networks ...

Drought-resistant plant genes could accelerate evolution of water-use efficient crops ...

HPE partners with Stephen Hawking's COSMOS Research Group and the Cambridge Faculty of Mathematics ...

Monopole current offers way to control magnets ...

70Gb/s optical intra-connects in data centers based on band-limited devices ...

Lobachevsky University scientists in search of fast algorithms for discrete optimization ...

High-Performance Computing cuts particle collision data prep time ...

TOP500

High performance computer MOGON II at the Johannes Gutenberg-Universität Mainz among the 100 fastest supercomputers in the world ...

The Cloud

HPE unveils industryis first SaaS-based multi-Cloud management solution for on-premises and public Clouds ...

AccelStor revs up NeoSapphire all-flash array portfolio for next generation Cloud application ...

70Gb/s optical intra-connects in data centers based on band-limited devices


Experimental set-up for 70 Gb/s data transmission link. Credit: Science China Press.
1 Dec 2017 Beijing - With the ever development of optical data-center intra-connects, the realization of high-capacity and low-cost optical communication links among severs in data centres has been more and more popular in the industry. Recently, a research result, completed by the researchers from Peking University, shows that a 70Gb/s optical link has been experimentally demonstrated using the 18GHz band-limited VCSEL and multimode fibers, which makes it possible to realize high-speed data transmission in data centres only by low-cost and band-limited devices.

SCIENCE CHINA Information Scienceshas just accepted a paper under the title "A 70 Gbps NRZ optical link based on 850 nm band-limited VCSEL for data-center intra-connects" which is authored by Zhongwei Tan, Chuanchuan Yang, et al.

This research builds the corresponding optical communication link and conducts the experimental work. The receivers utilize the forward-feed equalization (FFE), combined with the max likelihood sequence estimation (MLSE), to process the received data, efficiently eliminating the inter symbol interference (ISI) caused by the limited bandwidth and realizing the 70 Gb/s data transmission.

With the development of Internet, the demand for mass data transmission and processing is ever growing. Especially for hyper-scale data centres, it is significant to build the high-capacity and low-cost communication links for sharing the processing ability and storage ability among servers. Based on the above, optical data-centre intra-connects develop quickly, and how to realize the optical links with high speed and low cost becomes extraordinarily important. The previous researches in this field mostly focused on the high transmission rate and employed large-bandwidth VCSELs (25GHz or so, typically). However, the large-bandwidth VCSELs lead to extremely high cost, which is against the original intention for low-cost optical intra-connects in data centres.

Based on the status, this research mainly focuses on the 18GHz band-limited commercial VCSEL, for cost saving, uses proper equalization method to suppress the ISI and realizes high data rate in short-reach data-centre interconnects.

Dr. Chuanchuan Yang, the corresponding author of this paper, believes that this research is of great directive significance for the band-limit and cost-effective VCSELs to be utilized in the data centres for the high-speed optical interconnects among severs in the future.

The results enrich the research work in the field of short-distance optical intra-connects in data centres and mainly research on the communication characteristic for band-limit devices. It has important scientific significance and reference value for realizing high-capacity and low-cost data center intra-connects.

The research work is completed in cooperation with Prof. Fan Zhang, Prof. Ziyu Wang, Ph.D. candidate Yixiao Zhu, Master students Zhaopeng Xu and Kaiheng Zou, from Peking University. "To our best knowledge", wrote the researchers, "the results reported the highest data baud rate for an 18-GHz-class 850 nm VCSEL based optical link."

This research was funded by the National Natural Science Foundation, China (Nos. 61275005, 61475004).

Source: Science China Press

Back to Table of contents

Primeur weekly 2017-12-04

Quantum computing

Simulating physics ...

Key component for quantum computing invented ...

Quantum-emitting answer might lie in the solution ...

Quantum systems correct themselves ...

NCSA SPIN intern Daniel Johnson published in Classical and Quantum Gravity ...

Focus on Europe

9th Irish Supercomputer List published ...

Gap between research and industry HPC in Ireland widens ...

SURFsara extends its status as Intel Parallel Computing Center for 2018 ...

EXDCI issues Call for Workshops for the European HPC Summit Week 2018 ...

Hardware

Supermicro introduces next-generation storage form factor with new Intel "Ruler" all-flash NVMe 1U server and JBOF ...

New director named at Los Alamos National Laboratory ...

AccelStor empowers all-flash array to advance genomics data analysis ...

New Storage 2020 report outlines vision for future HPC storage ...

Loci adds William Schrader, former PSINet Inc. CEO, to Advisory Board ...

Shantenu Jha named Chair of Brookhaven Lab's Center for Data-Driven Discovery ...

Applications

ORNL-designed algorithm leverages Titan to create high-performing deep neural networks ...

Drought-resistant plant genes could accelerate evolution of water-use efficient crops ...

HPE partners with Stephen Hawking's COSMOS Research Group and the Cambridge Faculty of Mathematics ...

Monopole current offers way to control magnets ...

70Gb/s optical intra-connects in data centers based on band-limited devices ...

Lobachevsky University scientists in search of fast algorithms for discrete optimization ...

High-Performance Computing cuts particle collision data prep time ...

TOP500

High performance computer MOGON II at the Johannes Gutenberg-Universität Mainz among the 100 fastest supercomputers in the world ...

The Cloud

HPE unveils industryis first SaaS-based multi-Cloud management solution for on-premises and public Clouds ...

AccelStor revs up NeoSapphire all-flash array portfolio for next generation Cloud application ...