What is submarine fiber optic cable?

What is submarine fiber optic cable? Submarine cable are cables wrapped in insulating materials, laid on the seabed, and used for telecommunication transmission. Submarine fiber optic cable are optical cables that connect two or more landing points and are used for optical signal and network signal transmission and connection. Submarine fiber cable are divided into submarine communication cables and submarine power cables. Modern submarine cables all use optical fiber as material to transmit telephone and Internet signals.

Types of Submarine Cable

Based on the application, submarine optical cables can be divided into submarine single armored (SA), submarine double armored (DA), submarine light protection (LWP), submarine lightweight (LW) and submarine light armored (LWA) optical cables.
.SA cables are suitable for deployment, burial. Construction and recovery in areas with a water depth of more than 20 meters and at least 1500 meters.
.DA cables are suitable for deployment, burial, construction and recovery in areas with a depth of 500 meters. Which providing the protection required within this depth range. And should have a certain weight to prevent tidal waves from moving the submarine cable.
.LWP cables are suitable for deployment, construction and recovery in areas with a water depth of more than 1000 meters and at least 8000 meters. But have certain anti-abrasion and anti-fish bite capabilities.
.LW cables are suitable for deployment, construction and recovery in areas with a water depth of more than 1000 meters and at least 8000 meters.
.LWA cables are suitable for deployment, burial, construction and recovery in areas with a water depth of 20 meters and 1500 meters and an unburied depth of 2000 meters.

How does Submarine Cable Work?

Submarine fiber optic cable consist of two key components. The first part: the optical fiber that carries the data and the conductive material that transmits the electric current. This current is used to feed the optical amplifiers along the submarine cable. In addition, the cable is coated with several layers of protective materials to keep out water and corrosion.

How are Submarine Fiber Optic Cable made?

In the production of submarine optical cables, the optical fibers are first embedded in a jelly-like compound. This protects the cable from damage even when it comes into contact with seawater. The cable is then placed in a steel pipe to prevent the pressure of the water from destroying it. Next, it is wrapped in steel wire with extremely high overall strength. It is then sheathed in a copper tube and finally covered with a protective layer of polyethylene material. Close to the coast of the continental shelf, submarine cable are usually laid with lightweight cables and stronger steel wires. And covered with an asphalt coating to prevent seawater corrosion.

Advantages and Applications of Submarine Fiber Cable

Submarine fiber cables have high transmission capacity and high reliability. High safety, long service life and low maintenance cost. Submarine fiber cable have good anti-extrusion performance. The armor of submarine cables is heavy and provides better tensile strength for the cables. Strong anti-interference ability and good confidentiality performance. Submarine communication cables are mainly used for long-distance communication networks. Usually used in more important occasions such as long-distance islands and cross-sea military facilities. The laying distance of submarine power cables is much shorter than that of communication cables. It is mainly used between land islands, across rivers or harbors. Which connecting drilling platforms from land or connecting drilling platforms to each other. In general, the use of submarine cables to transmit electricity is undoubtedly more expensive than overhead cables of the same length. But it is often more economical to use it than to use small and isolated power stations for regional power generation, and it has more benefits in offshore areas. In countries with many islands and rivers, this type of cable is widely used.

Summary

Submarine cable play a vital role in modern communication networks and have many advantages and broad market prospects.