Our "wireless" world that depends on cables at the bottom of the seas and oceans

2024-02-06 11:50:45Lifestyle SHKRUAR NGA REDAKSIA VOX

Our "wireless" world that depends on cables at the bottom of the seas

Submarine cables currently mostly consist of optical fibers that carry information. They are then covered with silicone gel, then wrapped with various layers of plastic, steel wire, copper and nylon in order to provide the proper insulation for signal protection.

The cables are laid using vessels specially modified for this purpose, transporting and slowly laying the 'wet factory' infrastructure on the seabed. These special vessels can carry thousands of kilometers of fiber optic cables at sea. A special underwater plow is also used to insert and lay underwater cables along the seabed closer to coastlines, where marine activities, such as anchoring and fishing, are more prevalent and can damage these cables.

Today there are more than 400 submarine cables in operation. Antarctica is the only continent not yet reached by an underwater telecommunications cable, although one is reportedly being considered to improve connectivity for researchers in the region. After choosing the desired route, specialized vessels begin the work of laying the cable, which is thrown to the bottom of the ocean. These ships carry giant spools of cable before slowly and precisely unrolling them and laying them on the ocean 'floor'. As cables begin to approach land, they are often buried in trenches created by underwater plows to protect them from damage.

The cables contain a number of repeaters, which boost the signal along the length of the cable approximately every 100 km. At each end, the cables reach the ground within a 'housing' cable station, from where the data is routed to its final location. At each end of the cable is a cable station; more like a normal data center, it houses important network equipment that powers the cable and controls its operations.

Today, cloud and hyperscale companies such as Facebook, Google, Microsoft and Amazon are increasingly investing in submarine cables, as part of traditional consortia and as private projects.

As cable technology has improved and costs have come down, remote locations that once had to rely on satellite, or slower infrastructure, are rapidly seeing a massive increase in local cable capacity. However, decisions about cable routes and participants must increasingly be made with allowances for potential political and regulatory consequences. While the rollout of terrestrial fiber can often be a political issue, it's usually the case that people and businesses are demanding more of it from their local representatives. However, with submarine cables, international relations can affect where the cable is laid and which companies are involved.

 


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