Fiber optic cables can be installed on poles using self-supporting or lashed methods, with costs ranging from $15,000 to $33,000 per mile depending on cable type and installation method.

Types of Aerial Fiber Optic Cables

1. ADSS (All-Dielectric Self-Supporting) Cable: Strong, self-supporting cable that can span long distances (up to 1000 meters) without additional support. Ideal for areas without existing messenger wires and can be installed near power lines safely .
2. Figure-8 or Messenger-Lashed Cable: Uses a steel messenger wire for support. The fiber is lashed to the messenger wire and is suitable for routes with existing pole infrastructure .
3. Loose Tube or Light Armored Cable: Often used for cable rack installations or secondary trunk lines. Requires additional support hardware when installed aerially .

Installation Methods

1. Stand and Lash Method:
   • Temporary supports or blocks are installed at each pole.
   • A pull line is threaded through the supports and attached to the cable.
   • The cable is pulled into position using a winch or manually, ensuring tension does not exceed the maximum rated cable load.
   • Cable is then lashed to the messenger wire and tensioned to achieve proper sag .
2. ADSS Installation:
   • The cable is self-supporting and tensioned between dead-end poles.
   • Intermediate poles support the cable without additional lashing.
   • Requires careful planning for sag, tension, and clearance from power lines .
3. Moving Reel Method:
   • A cable reel trailer or aerial lift truck moves along the pole line, deploying the cable in a single pass.
   • Faster than the stand and lash method but may require stationary reel placement in obstructed areas .

Hardware and Safety Considerations

• Hardware: Cable saddles, suspension clamps, brackets, blocks, cable rings, and splice closures .
• Safety: Maintain proper clearance from power lines, follow the National Electrical Safety Code, and avoid installation in wet conditions .
• Planning: Survey the route, obtain permits, evaluate pole strength, and select splice locations for accessibility .

Cost Estimates

• Stand and Lash Method: $15,420 to $21,588 per mile for a 288-fiber cable, excluding splicing .
• ADSS Construction: $23,647 to $33,106 per mile, depending on pole spacing and installation complexity .
• Costs vary based on labor, cable type, pole infrastructure, and environmental conditions. Using existing poles can reduce costs significantly .

Summary

Hanging fiber optic cables on poles involves selecting the appropriate cable type (ADSS or lashed), planning the route, using proper hardware, and following safety standards. Costs per mile range from approximately $15,000 to $33,000, with ADSS being more expensive in materials but potentially cheaper in labor due to simplified installation. Proper planning and route surveys are essential to ensure a safe, durable, and cost-effective aerial fiber deployment.