Wednesday, April 28, 2010

Cable types

  • OFC: Optical fiber, conductive
  • OFN: Optical fiber, nonconductive
  • OFCG: Optical fiber, conductive, general use
  • OFNG: Optical fiber, nonconductive, general use
  • OFCP: Optical fiber, conductive, plenum
  • OFNP: Optical fiber, nonconductive, plenum
  • OFCR: Optical fiber, conductive, riser
  • OFNR: Optical fiber, nonconductive, riser
  • OPGW: Optical fiber composite overhead ground wire

[edit] Jacket material

The jacket material is application specific. The material determines the mechanical robustness, aging due to UV radiation, oil resistance, etc. Nowadays PVC is being replaced by halogen free alternatives, mainly driven by more stringent regulations.

Material Halogen-free UV Resistance Remark
LSFH Polymer Yes Good[3] Good for indoor use
Polyvinyl chloride (PVC) No Good[4] Being replaced by LSFH Polymer
Polyethylene (PE) Yes Poor[5][6][7] Good for outdoor applications
Polyurethane (PUR) Yes ? Highly flexible cables
Polybutylene terephthalate (PBT) Yes Fair?[8] Good for indoor use
Polyamide (PA) Yes Good[9]-Poor[10] Indoor and outdoor use

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