Powder filled fiber optic cable
First Claim
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1. An optical cable comprising at least one optical waveguide, a protective sheath surrounding the waveguide, and a mixture of a hydrophilic and hydrophobic powder within the sheath and contacting the waveguides, the hydrophilic powder in contact with water being substantially non-swellable and forming a viscous solution and preventing the formation of ice crystals.
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Abstract
Optical cable in which an optical waveguide within a protective sheath is in contact with a mixture of hydrophilic and hydrophobic powders, the hydrophilic powder being non-swellable and forming a viscous solution in contact with water to prevent ice crystal formation.
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Citations
20 Claims
- 1. An optical cable comprising at least one optical waveguide, a protective sheath surrounding the waveguide, and a mixture of a hydrophilic and hydrophobic powder within the sheath and contacting the waveguides, the hydrophilic powder in contact with water being substantially non-swellable and forming a viscous solution and preventing the formation of ice crystals.
- 11. An optical cable comprising a crush resistant core formed with a plurality of circumferentially spaced, longitudinally extending ribs defining grooves between them, a plurality of optical waveguides within and extending along the grooves and a protective sheath surrounding the core and waveguides, the grooves also containing a mixture of a hydrophilic and hydrophobic powder in contact with the waveguides, the hydrophilic powder in contact with water being substantially non-swellable and forming a viscous solution and preventing the formation of ice crystals.
Specification