Typical cables have a polyethylene sheath that encases the fiber within a strength member such as steel or Kevlar strands. Cross section view of a single fiber cable. From carefully removing the polyethylene outer jacket and inner sheath and PSP armor, protecting against moisture and abrasion, to ensuring a fiber strand is clean in preparation for splicing, you can see all the. For greater environmental protection, fibers are commonly incorporated into cables. A plastic sheath is applied directly over the optical sheath. Suitable for inter-building. A fiber optic cable consists of five basic components: the core, the cladding, the coating, the strengthening fibers, and the cable jacket. Rigid fiber assemblies sometimes put light-absorbing ("dark") glass between the fibers to prevent light that leaks out of one fiber from entering another.
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