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Submarine optic fiber cable is laid for data transmission between states,with the 

performance of huge transmission capacity, long distance and compatibility to sever
ambience.

Characteristics

•High strength fiber –ensure stable signal transmission and effective operation life.
•Special water blocking jelly –prevent the ingress of water or hydrogen gas.
•On-line fiber excess control –exact fiber excess in finished cable.
•Stainless steel tube –avoid external damages to optic fiber.

Cable protection

The optical fiber submarine cable should provide protection against the
environmental hazards at its depth of utilization: protection against marine life, fishbite and abrasion, and armouring against aggression and ship activities. Different
types of protected cable are defined in [G.972], in particular:

•The lightweight cable (LW cable);
•Cable suitable for laying, recovery and operation, where no special protection is
required.
•The lightweight protected cable (LWP cable).
•Cable suitable for laying, recovery and operation, where special protection is
required.
•The single armoured cable (SA cable).
•Cable suitable for laying, burial, recovery and operation, and suitably protected for
specific area in shallow water.
•The double armoured cable (DA cable).
•Cable suitable for laying, burial, recovery and operation, and suitably protected for
specific area in shallow water.
•The rock armoured cable (RA cable).
•Cable suitable for laying, recovery and operation, and suitably protected for specific
area in shallow water.