11/1/21 –NEC Corporation has been contracted by Facebook to build an ultra-high performance transatlantic subsea fiber-optic cable connecting the U.S. and Europe, a plan that calls for capacity of up to a petabit per second.

A press release said that, until recently, subsea cable was composed of 16 fiber pairs at most. Now, using NEC’s newly developed 24-fiber pair cable and repeaters, a system can deliver a maximum transmission capacity of a half petabit per second, the highest to date for a long-distance “repeatered” optical subsea cable system. That performance represents a 50% improvement in fiber count over the 16-fiber pair systems.

Per Teleography, Facebook has a stake in 13 cables. Google has an ownership stake in at least 16 current or planned undersea cables around the world. It noted that the internet giants are the ones leading undersea cable development, displacing traditional telecom giants.

Of note, OCC, an NEC subsidiary, previously reported in March that its 24 fiber pair cable can be manufactured using a wide range of existing optical fibers, according to the needs of each new cable system. International data usage across the Atlantic is expected to expand twenty-fold in the 15 years between 2021 and 2035. The region ranks among the highest growth geographies for data traffic demand, bringing ever-greater demands to reduce the cost per bit on subsea cable networks.

Japan’s NEC Corporation has signed a contract with the National Submarine Cable Utility Belau Submarine Cable Corporation (BSCC) of the Palau Republic (Palau) for the Palau Cable 2 (PC2) cable construction project.

A press release said that PC2, with a total length of approximately 110 km, will connect Palau with the Southeast Asia–United States (SEA–US) cable that connects Southeast Asia and the U.S. mainland. BSCC, a state-owned public corporation, owns and manages a submarine fiber optic cable network for Palau. This cable is scheduled to be completed by the end of 2022.

PC2 adopts the latest optical wavelength multiplexing transmission system of 100 gigabits per second (100 Gbps). An addition to the first optical submarine cable laid by NEC in Palau in 2017, it ensures the redundancy of Palau’s network, reliable communications and the increasing demands for communications.

The Republic of Palau consists of eight principal islands and more than 250 smaller ones lying roughly 500 miles southeast of the Philippines, in Oceania. The islands of Palau constitute the westernmost part of the Caroline Islands chain. Its total land area is 177 sq mi.

Per a report in Total Telecom, in 2017, NEC began construction of three submarine cables in Micronesia, to connect the islands of Palau, Yap, and Chuuk with the SEA–US cable. NEC notes that its OCC Corporation subsidiary makes submarine optical cables able to withstand water pressure 8,000 meters beneath the sea.

NEC has won a contract from Okinawa Cellular Telephone Company to supply an optical submarine cable system connecting Okinawa Prefecture and Kagoshima Prefecture in Japan to be in operation in April 2020. 

A press release said that NEC will provide the optical submarine cable system as a turnkey solution. The cable will be manufactured by NEC’s subsidiary OCC Corporation, which it noted is the only company in Japan that can make optical submarine cables capable of withstanding the water pressure from 8,000 m deep seas.

The cable system will be connected to Nago City, Okinawa Prefecture, and Hioki City, Kagoshima Prefecture, with a total length of approximately 760 km and at a maximum depth of approximately 1,200 m. The system will employ the latest optical wavelength multiplex transmission method, with maximum design transmission capacity of 80 Tbps.

NEC, as a system integrator, will provides all aspects of submarine cable operations, including the optical transmission terminal stations, optical submarine repeaters, optical submarine cables, ocean surveys and route designs, installation of equipment and cable, and training and delivery testing.