| 摘要 |
<p>The invention relates to: A long distance submarine communications cable (10) for use in a communications system requiring a high DC-voltage power supply, said cable comprising one or more optical fibres (1) for transferring optical signals, and one or more electrical conductors (3) for power feeding one or more intermediate units for regenerating said optical signals, and an insulation system (4, 6, 7) as a covering for said one or more electrical conductors (3). The invention further relates to a method of production of such a cable and to the use of a cable. The object of the present invention is to provide a long distance submarine fibre optical communications cable comprising electrical conductors for power feeding intermediate units and a method of manufacture of said cable, which allows a compact construction at high supply DC-voltages. The problem is solved in that it comprises an electrically conducting, watertight sheath (8) on the outer surface of said insulation system (4, 6, 7). This has the advantage of allowing a very compact cable construction even in a system requiring DC-voltage supply in the 10s of kV-range as e.g. in a transatlantic communications cable using DWDM.</p> |
