Optical fiber-containing insulators

An optical fiber-containing insulator comprising an insulator body having a through hole axially provided in a central portion thereof, an optical fiber core wire passing through the through hole, an insulating material filled between an inner peripheral surface of the through hole and the optical fiber core wire, and means for holding the optical fiber core wire at the central portion of the through hole of the insulator body.

An optical fiber-containing insulator assembly comprising a plurality of insulator bodies each having a through hole axially provided in a central portion thereof, an optical fiber core wire being passed through the through holes of the insulator bodies, an insulating material being filled between inner peripheral walls of the through holes of the insulator bodies and the optical fiber core wire, and a spacer being made of substantially the same material as that of the insulating material, said spacer having a central hole, wherein end surfaces of the adjacent insulator bodies are joined together via the spacer, and the optical fiber core wire is passed through the central hole of the spacer and is sealingly bonded to the insulator bodies with the insulating material, so that the optical fiber core wire is held in the central portions of the through holes of the insulator bodies.