Optical fiber cable with embedded strength members
OwnerDarshana Beat, Swarnava Saha +3inventors
InventorsDarshana Beat, Swarnava Saha, Raj Gangwar, Abhishek Upadhyay, Vikash Shukla
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Abstract
The present invention relates to an optical fiber cable (100) comprising an optical fiber unit (102), optical fiber (104), a tight buffer layer (106), a sheath (108), a plurality of strength members (110a, 110b, 110c), a water swellable element (112) and a filling strength member (SM) 114. In particular, the optical fiber cable (100) is an all-dielectric communication cable with a preferential bending ratio between 1-2. Moreover, the strength members (110a, 110b, 110c) have an elastic modulus greater than 45 GPa and each strength member of the plurality of strength members (110a, 110b, 110c) has a diameter between 0.4 mm to 0.8 mm.
Claims19
An optical fiber cable (100)
- comprising:
- at least one optical fiber unit (102) having at least one fiber (104);
- a sheath (108) encapsulating the at least one optical fiber unit (102);
- a plurality of strength members (110a, 110b, 110c) embedded in a sheath (108), wherein the optical fiber cable (100) has a preferential bending ratio greater than 1 and less than 2, the preferential bending ratio is a ratio of a maximum bending stiffness value to a minimum bending stiffness value of the optical fiber cable (100), the bending stiffness being a measure of resistance of the optical fiber cable (100) to bend in a plane perpendicular to the longitudinal axis of the optical fiber cable (100), as measured in accordance with IEC 60794-1-2, method E17B, the bending stiffness values being determined for a set of bending planes defined by placement and size of the plurality of embedded strength members (110a, 110b, 110c), wherein the plurality of strength members (110a, 110b, 110c) comprise at least three strength members, and,
- wherein each strength member of the plurality of strength members (110a, 110b, 110c) has a diameter between 0.4 mm and 0.8 mm.
Dependencies are inferred from the claim text.