Why place cables in the deep sea? Isn't it good on land?

Why place cables in the deep sea? Isn't it good on land?

It is true that sharks bite submarine cables, but since 2006, the damage probability of submarine fish and sharks to cables has been less than 1%, which is related to the complex basic structure of submarine optical cables. Besides the innermost optical fiber bundle, there are at least alkane layer, polyethylene layer, steel strand layer, polyester resin or asphalt layer, polycarbonate layer, aluminum waterproof layer Copper pipe or aluminum pipe and paraffin wax.

Submarine optical cables are not only strong in structure and light in materials, but also have advantages that terrestrial optical cables cannot have. For example, the rise and fall of the seabed terrain is far less than the land span. When laying cables, there is no need to dig deep tunnels or build supports.

Secondly, the cable buried on the seabed is not easy to be disturbed by human production activities. If there is no large-scale sea earthquake, ordinary wind and waves are not enough to have a significant impact on it.

In short, the implementation of submarine optical cable is more convenient than that of terrestrial optical cable. Not only the investment is relatively better, but also the construction speed will be faster. At the same time, the safety and stability of submarine cables are relatively higher, which not only has good confidentiality, but also has strong anti-interference ability. In the absence of sudden accidents, the service life of submarine optical cables can usually reach about 25 years.