We are talking about the underwater infrastructure, which should be operational in the next three years. These are the 2Africa cable encircling the African continent, the transatlantic Dunant and JGA North, which will connect Japan and Australia for the first time in 20 years. Discussion - under the cut.
A photo - β unsplash
Africa Cable
In mid-May, several IT companies and carriers β including Facebook, Orange, China Mobile and the Internet Society β about plans to lay a submarine cable 2Africa with a length of 37 thousand kilometers. It will unite Europe, the Middle East and sixteen other countries in Africa, where about a billion people face lack of Internet access.
Bandwidth 2Africa 180 Tbps. This is in than all the cables going to the African continent at the moment. Project among those comparable in scale, where an aluminum conductor is used instead of copper. He voltage drops, which allows you to increase the number of fiber pairs in the cable.
The new cable will be based on Spatial Division Multiplexing (SDM) technology, which optimizes spectral efficiency. In this case, the optical components of intermediate amplifiers not with one pair of fibers, but with several at once, which in some cases increases the throughput .
The exact cost of the 2Africa project is not yet known, but Bloomberg experts its a billion dollars. It is planned to put the cable system into operation in 2023β2024.
But until that moment, several more submarine cables will start working.
Who else is developing underwater infrastructure
In 2018 Google about plans to lay a transatlantic cable 6,6 thousand kilometers long, connecting the US coast with France. The system was named Dunant. Here, as in the case of 2Africa, SDM technology will be used. It will help provide a capacity of 250 Tbps and expand the capabilities of one of the busiest destinations. On the cables of the Atlantic 55% more data than Pacific cables.
Run Dunant in operation plan before the end of this year. In March, the French telecommunications company Orange own part of the cable to the terminal equipment in the commune .
A photo - β unsplash
This week in operation JGA North system. Its length is 2,7 thousand kilometers, and the throughput is 24 Tbps, but in the coming year it will be increased to 30 Tbps. JGA North connects Japan and Guam and is connected to JGA South which runs between Guam and Sydney. This JGA system was the first submarine cable in 20 years to connect Japan and Australia.
In 2021 in the Asian region another 128 Tbps submarine cable is SJC2. It will connect China, Japan, Singapore, South Korea and Taiwan. The cost of the project is estimated at $439 million. The additional cable will have to strengthen the infrastructure and become a reserve in case of unforeseen breaks that occur in this section. .
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Source: habr.com