JEWELBLU OPTICALFIBER PATCH CORDS Technical Inquiry

720 core optical cable diameter

The diameter of a 720-core optical fiber cable typically ranges from 30 mm to 50 mm, depending on the design and protective layers.Cable Construction

A 720-core optical cable is a high-fiber-count cable used for backbone or outside plant applications. Common construction features include:

  • Fiber Arrangement: Fibers are usually organized in ribbons or loose tubes, with multiple fibers per ribbon (e.g., 12 fibers per ribbon) or tube. For example, some designs use 24-fiber ribbons stacked in a central tube to minimize cable size .
  • Central Strength Member: A central rod or aramid yarn provides tensile strength and maintains cable integrity .
  • Water Blocking: Many 720-core cables are gel-free or dry water-blocked to prevent moisture ingress .
  • Outer Sheath: The cable may have LSZH (Low Smoke Zero Halogen) jackets for indoor use or PE jackets with optional armor for outdoor and direct-burial applications .
  • Mechanical Protection: Some cables include interlocking armor or glass composite armor to resist rodent attacks and improve tensile strength .
Diameter Considerations

The overall diameter depends on:

  • Number of fibers per ribbon or tube
  • Number of tubes or ribbons stacked in the core
  • Thickness of the strength members, fillers, and outer jacket
  • Presence of armor or additional protective layers For example:
  • Indoor LSZH UltraRibbon 720-core cables with 24-fiber ribbons in a single central tube are designed to be compact and lightweight, typically around 30–35 mm in diameter .
  • Outdoor armored 720-core cables with multiple loose tubes, water-blocking, and steel or composite armor can reach 40–50 mm in diameter .
Summary

While the exact diameter varies by manufacturer and cable type, a 720-core optical cable generally falls between 30 mm and 50 mm. For precise planning, it is recommended to consult the manufacturer's datasheet, as factors like ribbon stacking, armor, and jacket type significantly affect the final dimensions .

720 core optical cable diameter

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The standard jacket color will be determined by the dominant fiber type in the cable and will use the standard part

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Our optical fiber and probe assemblies are clearly and cleanly labeled in three ways so that you can always determine the part

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Product feature: This cable has improved rodent protection by Steel Wire Armouring (Full Rodent Protected). Existing out of 6 tubes

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Technical note

This reference is intended for preliminary fiber optic patch cord research. Compatibility, link budgets, connector types, polish, installation methods, test limits and applicable standards must be verified for the specific project.

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