Optical fiber cable capable of withstanding a jump in temperature to 350.degree. C. for a short period of time
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United States of America Patent
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Jul 2, 1991
Grant Date -
N/A
app pub date -
Jul 5, 1990
filing date -
Jul 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical fiber cable capable of withstanding a jump in temperature to 350.degree. C. for a short period of time, the cable comprising: (a) at least one carrier element of a composite of glass fiber and thermosetting resin; (b) an optical fiber support constituted by a grooved rod surrounding the carrier element, or a tube preferably provided with carrier elements in its thickness, or by compact structure fibers, the rod or tube being made of a thermoplastic polymer; (c) optical fibers disposed in the grooves of the rod or inside the tube; (d) a viscous material filling the grooves or the tube around the optical fibers; (e) an envelope constituted by a tape of thermoplastic polymer; wherein the grooved rod or the tube, or the secondary coating of compact structure fibers, is made of cross-linked polyethylene, wherein the viscous material filling the grooves is a silicon resin, and wherein the thermoplastic polymer of the envelope is a polyimide resin. Suitable for use as a guard cable in conjunction with high tension or medium tension electric cables.
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