Optical fiber cable
AssigneeHitachi Cable, Ltd.
InventorYoshihiro Takahashi
Life of this patent
Estimating the term…
Abstract
An optical fiber cable has an optical fiber core wire and a tension member. The tension member is formed of a glass fiber reinforced resin linear material with glass fibers and a matrix resin, and satisfies the following requirements: (1) (EfVf+EmVm)d2≧8.3/n wherein Ef represents the modulus of elasticity of glass fibers, GPa; Vf represents the content of glass fibers, %/100; Em represents the modulus of elasticity of matrix resin, GPa; Vm represents the content of matrix resin, %/100; d represents the diameter of tension member, mm; and n represents the number of tension members used in optical fiber cable; (2) (Ef/Em)≧22; (3) Vf=0.6 to 0.88; and (4) an elongation at break of glass fibers of not less than 5% and an elongation at break of matrix resin of not less than 5%.
Claims9
An optical fiber cable, comprising:
- an optical fiber core wire;
- and
- a tension member, said tension member being formed of a glass fiber reinforced resin linear material comprising glass fibers and a matrix resin, said glass fiber reinforced resin linear material satisfying the following requirements:
- (1) (EfVf+EmVm)d2≧8.3/n
- wherein Ef represents the modulus of elasticity of glass fibers, GPa;
- Vf represents the content of glass fibers, %/100;
- Em represents the modulus of elasticity of matrix resin, GPa;
- Vm represents the content of matrix resin, %/100;
- d represents the diameter of tension member, mm;
- and n represents the number of tension members used in optical fiber cable;
- (2) (Ef/Em)≧22;
- (3) Vf=0.6 to 0.88;
- and
- (4) an elongation at break of glass fibers of not less than 5% and an elongation at break of matrix resin of not less than 5%.
An optical fiber cable, comprising:
- an optical fiber core wire;
- and
- a tension member, said tension member being a glass fiber reinforced resin linear material comprising glass fibers having an elongation at break of not less than 5% and a matrix resin prepared by curing, with a thermal cationic polymerization catalyst or an acid anhydride, a liquid epoxy resin having a viscosity of not more than 15000 mPa·s at 25° C. before curing.
Dependencies are inferred from the claim text.