FIELD: optical cables.
SUBSTANCE: invention relates to optical cables capable of maintaining operational condition under adverse environmental conditions. An optical cable contains a plurality of optical fibres sealed in a metal tube; a polymeric inner shell surrounding the metal pipe and operably connected to the metal pipe; and an outer jacket surrounding a polymeric inner jacket, the metal tube being the only metal tube in the optical cable.
EFFECT: reduction in cable dimensions.
21 cl, 9 dwg
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