The National Institute of Informatics has built and started operation of a long-distance 5 Gbps line between Tokyo and Osaka of the academic network "SINET400".It is the world's highest level large-capacity line, and has four times the communication capacity of the 5 Gbps line that connects the whole country with SINET100 currently in operation.
According to the National Institute of Informatics, an optical fiber with an expanded core diameter suitable for long-distance large-capacity transmission was laid between Tokyo and Osaka, and a total distance of 600 km or more was connected by a large-capacity line of 400 Gbps.This eliminates the crowded public of communications that can lead to quality degradation.
SINET is a communication network constructed and operated by the National Institute of Informatics, and is used by universities and research institutes nationwide.In addition to connecting data centers in all prefectures with 100 Gbps lines, the number of international lines in the United States, Europe, and Asia will be 2019 Gbps in 100.
However, between Kanto and Kansai, where universities and research institutes are concentrated, the increase in data communication is squeezing the communication capacity, and in the future, backup of disaster countermeasure data, large-scale data transfer by large-scale research projects, full specifications It is expected to be used for research in the medical field using 8K uncompressed images, and it is expected that the communication capacity will be further compressed, so the capacity has been increased.
The 400Gbps line enables full-spec 8K video transmission.The National Institute of Informatics says that it can also contribute to the realization of telemedicine using detailed videos.
