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Do You Understand The Technical Principles Of Submarine Cables?

Jun. 26, 2020

Submarine optical cable, also known as submarine communication cable, is a wire wrapped with insulating material and laid on the bottom of the sea to establish telecommunication transmission between countries.


We learned from the China Submarine Pipe Installation Provider that the submarine optical cable system is mainly used to connect the optical cable and the Internet. It is divided into two parts: onshore equipment and underwater equipment. The most important and most vulnerable underwater equipment for Subsea Cable Laying is also the most vulnerable part.


The networks of various countries in the world can be regarded as a large local area network. The submarine and land optical cables connect them to the Internet. The optical cable is the "central nerve" of the Internet, while the United States is almost the "brain" of the Internet. As the birthplace of the Internet, the United States stores many Web and IM (such as MSN) servers. Ten of the 13 root servers that resolve domain names globally are in the United States. Log in to most .com and .net websites or send e-mails and data. It is almost necessary to go around the United States once to reach the destination.


Do You Understand The Technical Principles Of Submarine Cables?cid=5


The submarine cable is maintained in sections. For security purposes, the submarine cable also needs maintenance. If someone fished out the submarine cable and added fiber, they could steal the information. If there is a war, someone may also damage the optical cable. Submarine cables are the best solution for communications. Other methods such as satellite and microwave can be used as supplements, but it seems that they cannot replace submarine cables because their channels are limited. It is a method that allows users to communicate in a cheap way.


The remote power supply of the submarine cable system is very important. The repeaters along the submarine cable rely on the remote power supply of the landing bureau. The digital repeaters used in submarine optical cables have many functions, which are several times larger than the analog repeaters used in submarine cables. The power supply requires high reliability and cannot be interrupted. Therefore, in areas where sharks are infested, two layers of steel tape are added to the outside of the submarine cable and a polyethylene outer sheath is added. Even with such tight protection, in the late 1980s, there were instances where the polyethylene insulation of deep-sea cable was bitten by a shark and caused a power failure.


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