Optical cable stripping involves removing the protective coatings or jackets from fiber optic cables using precision tools to expose the bare glass without damaging it.

Overview of Fiber Stripping

Optical fibers are coated with polymers such as acrylate, silicone, or polyimide to protect the glass core. Stripping these coatings is essential for splicing, connectorization, or other fiber processing tasks. The goal is to expose the bare fiber while avoiding scratches or nicks that could compromise performance . Typical coated fiber diameters are around 250 µm, with the glass cladding at 125 µm, though specialty fibers may have thinner coatings or larger jackets .

Types of Fiber Strippers

1. Mechanical Handheld Strippers: Use precision blades to remove coatings or buffers. They are color-coded for different fiber diameters and often include fiber guides to ensure proper alignment .
2. Thermo-Mechanical Strippers: Apply heat to soften the coating before removal, reducing the risk of fiber damage .
3. Non-Contact Methods: Include hot air or laser ablation for delicate or specialty fibers, often used in automated systems .
4. Chemical Stripping: Uses solvents or acids to dissolve coatings, typically in laboratory or high-precision applications .

Semi-Automatic and Automated Stripping

For high-volume or precise applications, semi-automatic machines like the FiberOptic 7010 or FiberStrip 7030 can strip coatings, buffers, and jackets with consistent lengths and minimal manual effort . Automated systems, such as the AutoStrip II, can perform mid-span window stripping with chemical-free methods, adjustable strip lengths, and high cleanliness, suitable for fibers with coatings up to 1,000 µm .

Practical Considerations

• Strip Length: Typically 30–40 mm for end preparation, but window stripping can vary from 2 to 150 mm .
• Fiber Diameter: Ensure the stripper matches the fiber's cladding and coating diameter to avoid damage .
• Buffer and Jacket Removal: Some tools handle tight buffers (900 µm) or larger cable jackets (up to 3.5 mm) for complete cable preparation .
• Handling: Use grippers or guides to hold the fiber securely; avoid wrapping or clamping the fiber directly to prevent microfractures .

Summary

Optical cable stripping is a critical step in fiber optic preparation. Choosing the right tool—manual, semi-automatic, or automated—depends on fiber type, coating thickness, and production volume. Proper stripping ensures clean, undamaged fibers ready for splicing, connectorization, or other optical applications, improving performance and reliability .