Patent ID: 8639076

Claim:
A fiber optic cable, said cable comprising: a plurality of buffer tubes each with one or more optical fibers, said buffer tubes having a first coefficient of contraction; a plurality of strength members, said strength members having a second coefficient of contraction and a flexibility diameter equivalent of said strength members is less than a desired cable bend diameter; and a jacket, said jacket having a third coefficient of contraction, wherein the cross-sectional area of said strength members is increased relative to the cross-sectional area of said buffer tubes and jacket, so that a ratio of cross sectional area of said buffer tubes and jacket to said strength member is less than 14.8, so as to obtain an overall combined coefficient of contraction of the assembly of cable components which contributes to improve cold temperature resistance, so that the combined structure of said buffer tubes, said jacket and said strength members is such that said fibers within said buffer tubes meet maximum attenuation of substantially 0.07 db increase at −60° C.