| 摘要 |
A composite fiber optic and electrical cable having a core which loosely contains at least one optical fiber, one or more electrical conductors having an outer polymer insulating layer, one or more strength members and a surrounding protective jacket. The protective jacket is formed of a polymer material which forms a distinct mechanically separate phase from the polymer material forming the insulation layer surrounding the respective electrical conductors. For example, the jacket can be made of a polymer material having a melting temperature lower than the melting temperature of the insulating material of the electrical conductors. As a result, the polymer jacket does not bond with the insulating material during production of the cable. The jacket can, thus, be easily stripped from the electrical conductors during installation of the cable to facilitate the attachment of the electrical conductors to a signal repeater, or power source, or other electrical devices. The cable is manufactured by advancing the core, the electrical conductors and the strength members through an extruder which forms the protective jacket thereabout. The core can be supplied from a storage reel or can be fabricated in-line just prior to extruding the jacket around the buffer tube, the electrical conductors and the strength members, by extruding a buffer tube loosely around the optic fibers.
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