| 摘要 |
OPTICAL FIBER COMPOSITE INSULATORS AND PROCESSES FOR PRODUCING THE SAME An optical fiber composite insulator includes an insulator body in which a through hole having a substantially radially circular cross section is provided, a plurality of optical fibers passed through the through hole, and an organic insulating material gas-tightly sealing the optical fibers in the through hole, wherein a diameter of the through hole is not more than 13 mm, the optical fibers are located inside a hypothetical circle drawn on any plane orthogonal to an axis of the through hole and having a center coaxial with that of the through hole, the hypothetical circle having a diameter equal to 95 % of that of the through hole, and a distance between any optical fibers is set at not less than 0.1 mm. A method is also disclosed for producing such an optical fiber composite insulator, including the steps of: preliminarily heating the insulator body in its entirety at not less than 70.degree.C, then filling said organic insulating material into the through hole while said at least one optical fiber is being stretched straight, and then curing the organic insulating material by heating in a temperature range of not less than 75.degree.C but not more than 90.degree.C while at least one optical fiber is kept stretched straight.
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