Transatlantic communications cables

undersea cable

thumb|upright=1.35|Routes under study in early 1956

communications cable across the Atlantic

TAT-14 was the 14th consortium transatlantic telecommunications cable system. In operation from 2001 to 2020, it used wavelength division multiplexing. The cable system was built from multiple pairs of fibres—one fibre in each pair was used for data carried in one direction and the other in the opposite direction. Although optical fibre can be used in both directions simultaneously, for reliability it is better not to require splitting equipment at the end of the individual fibre to separate transmit and receive signals—hence a fibre pair is used. TAT-14 used four pairs of fibres—two pairs as

thumb|250px|The MAREA cable connects the United States and Spain

submarine communications cable

optical submarine communications cable system

transatlantic communications cable

FARICE-1 is a submarine communications cable connecting Iceland, the Faroe Islands and Scotland. The cable has been in use since January 2004 and is 100% owned by Iceland. The cable had an initial design capacity of 720 Gbit/s and is a two fibre pair design. The length of the cable is 1205 km for the direct route between Iceland and Scotland. The cable structure and repeaters were made by Pirelli and the terminal equipment was supplied by TYCO. In the year 2013 the terminal equipment was upgraded by Ciena (100 Gbit/s technology) bringing the total capacity of the submarine cable

EllaLink is an optical submarine cable linking the European and South American continents with landing points in Sines in Portugal and Fortaleza in Brazil. It has currently the lowest latency (<60 ms round-trip delay time between Portugal and Brazil) on the market.

submarine communications cable system connecting Canada, Greenland, and Iceland

TAT-8 was the 8th transatlantic communications cable and first transatlantic fiber-optic cable, carrying 280&nbsp;Mbit/s (40,000 telephone circuits) between the United States, United Kingdom and France. It was constructed in 1988 by a consortium of companies led by AT&T Corporation, France Télécom, and British Telecom. AT&T Bell Laboratories developed the technologies used in the cable. The system was made possible by opto-electric-opto regenerators acting as repeaters with advantages over the electrical repeaters of former cables. They were less costly and could be at greater spacing with les

Yellow / AC-2 (Atlantic Crossing 2) is a submarine telecommunications cable system linking the United States and the United Kingdom. The cable is wholly owned by Lumen (formerly Level 3 Communications) in the US following its acquisition of Global Crossing. The original owners, which each owned two of the fibre pairs, gave this cable system different names, so it is known as both Yellow (after the Beatles song Yellow Submarine) and AC-2. It has a capacity of 320&nbsp;Gbit/s as of January 2007, upgradeable to 640&nbsp;Gbit/s.