what is Kevlar that is used in enclosing cladding of optical fiber?
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READ ALL for better understandingFor indoor applications, the jacketed fiber is generally enclosed, with a bundle of flexible fibrous polymer strength members like Aramid (e.gTwaron or Kevlar), in a lightweight plastic cover to form a simple cableEach end of the cable may be terminated with a specialized optical fiber connector to allow it to be easily connected and disconnected from transmitting and receiving equipment For added strength during pulling, most fiber cables also contain a strength memberExcept for very short, easy runs (like 20 feet, between two outlets in the same room), every time you pull a fiber cable, you must attach the pull string of the fish tape to the strength memberIf you do not, you stand a good chance of ruining the cable With larger cables, strength members may be made of a steel rod, steel wires, or fiberglass/epoxy rodsMost strength members, however, consist of a layer of Kevlar yarn in the cable(Warning: Use special scissors to cut the KevlarThis is the stuff they make bullet-proof vests out of, and cutting it with your lineman's pliers will ruin them quickly