Optical fiber core and cable with reinforced buffer tube...

Details Optical fiber core and cable with reinforced buffer tube... Optical fiber core and cable with reinforced buffer tube...

G - Physics

02

B

G02B 6/44 (2006.01)

Patent

CA 2145215

Optical fiber core including a plastic buffer tube loosely containing individual optical fibers or a plurality of coplanar fibers in a plastic ribbon, which fibers and ribbon are longer than the buffer tube, at least two flexible strength members of a tensile strength greater than the tensile strength of the tube and havring a coefficient of expansion and contraction less than that of the tube, at the outer surface of the the and an adhesive binding the strength members to the tube or a tape or cord under tension around the strength members to prevent slippage of the strength members with respect to the tube and to prevent buckling of the strenght member when the core is subject to compressive forces. Also, an optical fiber cable containing such core .

L'invention est constituée par une âme de fibre optique comportant les éléments suivants : un tube tampon de plastique contenant de façon lâche des fibres optiques individuelles ou une pluralité de fibres coplanar dans un ruban de plastique, ces fibres et ce ruban étant plus longs que le tube tampon; au moins deux éléments de renforcement souples dont la résistance à la traction est plus grande que celle du tube et ayant un coefficient d'expansion et de contraction inférieur à celui du tube; et un agent adhésif liant les éléments de renforcement au tube ou un ruban ou un cordon sous tension entourant les éléments de renforcement pour les empêcher de glisser par rapport au tube et les empêcher de se plisser quand l'âme est soumise à des forces de compression. Un câble à fibre optique contenant l'âme de l'invention est également divulgué.

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