Patent · US Expired

Optical fibre submarine cable

US4408828A · kind A · utility

21Cited by
3References
27Claims
0Family size

Inventors

Key dates

Filing dateNov 20, 1980
Grant dateOct 11, 1983
Priority date—
Expiry dateNov 20, 2000

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B6/4427
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

The cable consists of a central core including helical grooves at its periphery and a composite sheath. Each groove receives at least one optical fibre. To obviate any distortion near the optical fibres as a result of cable laying and of high isostatic pressures in operation of the order of 8 daN/mm.sup.2, the center of the core is constituted by a strand of metal wires and by a metal grooved jacket therearound. The sheath comprises a metal inner jacket which closes the grooves but does not press on the fibres, an insulting jacket, a second metal jacket and an outer insulating jacket.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.