Optical fiber submarine cable
AssigneeKokusai Denshin Denwa Kabushiki Kaisha
InventorsTaiichiro Nakai, Kahei Furusawa, Makoto Nunokawa, Yoshihiro Ejiri
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Abstract
An optical fiber submarine cable, in which a high viscosity material of good wettability containing air gaps is filled in a space between an optical fiber cord having housed therein at least one coated optical fiber and a pressure resisting material layer having housed therein the optical fiber cord for protecting it from seawater pressure. The air gaps and the high viscosity material are arranged alternately with each other in the space at suitable intervals in the lengthwise direction of the cable. Alternatively, the air gaps are contained in the form of bubbles in the high viscosity material.
Claims7
In an optical fiber submarine cable, the improvement comprising a high viscosity material of good wettability containing air gaps and filled in a space between an optical fiber cord having housed therein at least one coated optical fiber and a pressure resisting material layer having housed therein the optical fiber cord for protecting it from seawater pressure.
An optical fiber submarine cable, comprising:
- a coated optical fiber core;
- a pressure resistant layer surrounding said optical fiber core and extending along the length of said optical fiber core;
- and a highly wettable high viscosity material disposed between said optical fiber core and said pressure resistant layer and having air containing voids interspersed in the region between said optical fiber core and said pressure resistant layer.
Dependencies are inferred from the claim text.