Submarine optical cable

Abstract

The invention belongs to the technical field of optical cables and particularly relates to a submarine optical cable. The submarine optical cable comprises an outer protection layer, a middle protection layer, an inner protection layer and a cable core assembly, wherein the cross section of the middle protection layer is annular, the middle protection layer comprises a first tearing net attached to the outer protection layer and a first damage layer attached to an inner wall of the first tearing net, the first tearing net is formed by weaving steel wires, the first damage layer comprises a base layer I and grid strips I located on the periphery of the base layer I, and the grid strips I are embedded into an inner wall face of the first tearing net; and the middle protection layer further comprises a first steel strand protection layer. The submarine optical cable is advantaged in that the first tearing net woven by the steel wires is attached to the periphery of the first damage layer, a reserved space is formed between the first tearing net and the base layer I of the first damage layer, and when the outer protection layer is destroyed by an external force and the first tearing net is impacted by the external force, deformation of the first tearing net consumes a part of the external force; and the first damage layer can continue to consume the external force through self-destruction, so the destructive force and the damage area of the external force are reduced.

Description

technical field [0001] The invention belongs to the technical field of optical cables, in particular to submarine optical cables. Background technique [0002] The submarine optical cable is laid on the seabed with a wire bundle wrapped in an insulating sheath. The seawater of the three-core submarine optical cable can prevent the interference of external optical and magnetic waves, so the signal-to-noise ratio of the submarine cable is high; no time delay can be felt in the submarine optical cable communication. The structure of the submarine optical cable is required to be strong and the material is light, but the light metal aluminum cannot be used, because the electrochemical reaction between aluminum and seawater will generate hydrogen gas, and the hydrogen molecules will diffuse into the glass material of the optical fiber, which will increase the loss of the optical fiber. Therefore, the submarine optical cable should not only prevent hydrogen from being generated ins...

AI Technical Summary

Problems solved by technology

Cables are often easily damaged by fishing trawlers, anchors, or even bitten by sharks. When subjected to external forces, because the existing optical cables resist external forces with high hardness, when the sheath of the optical cable reaches the protection limit, the external force will be in place. Great damage to fiber optic cables

However, the repair of submarine optical cables is extremely difficult. In addition to accurately judging the faulty section, it also takes a lot of time to salvage the faulty section to the repair ship. Therefore, for submarine optical cables, their adaptability to the submarine environment is extremely important

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