• On the afternoon of October 17, Shanghai Metro Line 18 held a roll-off ceremony at CRRC Zhuji.  The project train is currently the highest level fully automatic driving train (GoA4) unattended during the whole process.Shanghai Metro Line 18 was initially equipped with 50 vehicles and adopted the national standard 6-section A-type car group, with a maximum speed of 80km/h.BEIHAI Communication provided on-board passenger information system for Shanghai Line 18 trains. For the GoA4 level, the passenger information system can adapt to a variety of scenarios for linkage, and it fully considers reliability and redundancy. The passenger information system of this project uses a highly redundant ring Ethernet architecture, with dual switches for each vehicle and power supplied separately...
    2019 - 12 - 26

Optical Interconnect Solution for Cloud Data Center

日期: 2022-08-05
浏览次数: 9

Cloud data center is the infrastructure of cloud computing. Cloud computing business is continuing to penetrate, driving the construction of cloud computing super data center. The cloud IT infrastructure is mainly composed of switches, servers, and optical cables and optical modules (or AOC) that interconnect all these. The large-scale cloud data center will greatly increase the use of optical modules, and have more requirements for the transmission distance of optical modules, which will increase the proportion of single-mode optical modules.

The explosive growth of cloud data center traffic has driven the data rate of optical modules to upgrade and accelerate. It took 5 years for 10G rate ports to iterate to 40G rate ports, 4 years for 40G rate ports to upgrade to 100G rate ports, and may likely take only 3 years for 100G rate ports to 400G rate ports. In the future, all export data in the data center will need to undergo internal massive computing (especially the rise of applications such as AI, which makes the internal and export traffic more amazing). Nowadays, the flat architecture is widely used in data centers, so that the 100G optical module market will continue to grow at a high speed.

Optical Interconnect Solution for Cloud Data Center

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