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Introduction  
  Cables are designed according to user needs. The needs are defined by volume of signal required (fibers count), environment need (indoor, outdoor, inside equipment, panel patching), installation method (pulling tension) and cost effectiveness. In general, fiber can be protected by tight buffer or loose tube.

Loose tube has very high fibers count (high volume of information). 6 or 12 colored fibers according EIA standard (fibers are colored for identification) are loosely filled with jelly and jacketed into tube. This ensures that fibers are not stressed in the tube. Many tubes can be stranded together around a strength member to add mechanical strength. And yet the cable has relatively small diameter. Multiple tubes stranded together is to archive the very high fiber counts in a cable. This design provides stable and highly reliable transmission parameters for a variety of applications. The fibers used are having lowest attenuation (losses) property.

Additional material can be wrapped or jacketed to fulfill additional mechanical and environmental requirements. They included Water blocking tape wrapping, PE sheath jacketing, corrugated steel wrapping and glass fiber yarn protection and kevlar protection.

Apart from strengthening the cable, sheathing materials are selected to provide protection against abrasion, oil, solvents, other contaminates, UV and termite.

The cable terminating, and cable to cable joining is done by splicing to pig tail, and fiber to fiber respectively. This is suitable for outdoor cable plant (long distance distribution) as the cable construction and installation cost is lower. Project management is easier too.

This cable can be constructed for aerial, ducting and direct-buried installation and for some indoor use when installed according to NEC Article 770.

OCE can customize cable construction for your specific needs. The following are common cable construction that are manufactured by OCE :