Fiber optic tube connection to optical cable

Fiber optic tubes are connected to optical cables using furcation tubing and proper termination techniques to protect fibers and ensure precise alignment for signal transmission.

Understanding Furcation Tubing

Furcation tubing is a protective jacket used to organize and safeguard individual optical fibers when transitioning from a multi-fiber cable to connectors or splicing points. It typically consists of an inner tube reinforced with aramid yarn and an outer protective jacket, providing tensile strength and durability while preventing fiber damage during handling or installation . Furcation tubes are essential when cables need to be spliced, terminated, or connected to devices, and they come in various styles to suit different fiber types and connector configurations .

Preparing the Optical Cable

Before connecting a fiber optic tube, the optical cable must be properly prepared:

• Sheath Removal: Remove the outer jacket carefully without exceeding the cable's minimum bend radius to avoid fiber breakage .
• Buffer Tube Access: For loose tube cables, identify the buffer tube reversal point to safely unwind the fibers. Access a sufficient length of the cable core (typically around 2 meters) for proper handling .
• Cleaning: Clean the fiber ends and connectors with specialized tools to remove dust or debris, which can cause signal loss .

Connecting the Fiber to the Tube

1. Insert Fiber into Furcation Tube: Slide the prepared fiber into the furcation tube, ensuring it is fully seated and protected by the inner and outer layers .
2. Secure the Fiber: Use adhesive or mechanical clamps if required by the furcation tube design to anchor the fiber and prevent movement.
3. Terminate with Connector: Attach the appropriate connector (LC, SC, ST, etc.) to the fiber end. The ferrule within the connector aligns the fiber core precisely for optimal light transmission .
4. Polish and Inspect: Polish the fiber end and inspect it under a microscope to ensure smooth surfaces and proper alignment, minimizing signal loss .

Best Practices

• Avoid sharp bends and excessive pulling forces during installation to prevent fiber damage .
• Use color-coded furcation tubes for easy identification and organization of multiple fibers .
• Follow industry standards such as ANSI/TIA/EIA for compatibility and reliability .
• Maintain protective caps on fiber ends until final connection to prevent contamination . By following these steps, fiber optic tubes can be effectively connected to optical cables, ensuring durability, protection, and high-quality signal transmission.