Use wire strippers to remove the outer layer of the fiber core

Use a properly sized fiber optic stripper to carefully remove the outer jacket and buffer layers without damaging the glass fiber underneath.Selecting the Right Tool

For single-fiber cables, the outer jacket is typically 2–3 mm in diameter and can be stripped using a wire stripper of the appropriate gauge. It is crucial to select a tool that matches the cable diameter to avoid cutting or damaging the underlying aramid yarn or fiber core (Kevlar® strength members) which provide tensile strength to the cable assembly . Professional fiber strippers often feature multiple notches or holes calibrated for different layers: a large notch for the outer jacket, a middle notch for the buffer, and a small notch for the acrylate coating over the glass fiber .

Stripping Technique

1. Position the Cable: Place the fiber in the correct slot of the stripper, ensuring the blade depth is set to remove only the intended layer .
2. Cut the Jacket: Squeeze the jaws to press through the outer jacket and slide it off the cable. The edge should be clean and straight, not torn or jagged .
3. Inspect Strength Members: After removing the jacket, check the aramid yarn for any cuts. Damaged yarn reduces the cable's tensile strength .
4. Remove Buffer Coating: Use the appropriate notch to strip the buffer down to the 125 µm cladding. Avoid touching the glass fiber itself to prevent nicks or scratches .
5. Final Cleaning: If any primary acrylate coating remains, the same tool can often remove it. Ensure the fiber is clean and free of debris before splicing or connectorization .

Tips and Precautions

• Always use sharp, precision tools designed for fiber optics; generic wire strippers or knives can damage the fiber .
• Avoid excessive force; the goal is to remove coatings cleanly without nicking the glass.
• For midspan stripping or repeated operations, consider automated or thermal strippers for consistency and reduced operator error .
• Handle the exposed fiber carefully; even minor scratches can cause signal loss or connection failure . By following these steps and using the correct fiber optic stripping tools, you can safely remove the outer layers of a fiber core while preserving the integrity of the glass fiber for splicing or connectorization.