Optical Cable Stripping Tools

Optical cable stripping requires specialized fiber strippers and careful procedures to remove coatings without damaging the glass core, ensuring reliable splicing and connectorization.

Types of Fiber Strippers

Mechanical Strippers: These are precision hand tools designed to remove polymer coatings from optical fibers, typically 250 µm or 900 µm in diameter, down to the 125 µm glass cladding. They feature laser-drilled or precision-ground holes to prevent nicking the fiber and are suitable for standard telecommunication fibers and specialty fibers with thinner coatings . Thermal Strippers: These tools use controlled heat to soften the fiber coating, allowing gentle removal without mechanical stress. Adjustable temperature and timing settings ensure compatibility with different coating materials and fiber diameters, making them ideal for high-strength splices . Automated and Plasma-Assisted Strippers: Fully automated devices can perform end stripping or window stripping without contact, using plasma or other non-contact methods. These systems are highly consistent, reduce operator error, and can handle large-diameter fibers or fiber ribbons up to 1200 µm . Cable-Specific Strippers: For multi-layer cables, specialized tools like armored cable slitters or buffer tube strippers allow longitudinal or circumferential cuts of outer jackets, aramid yarn, and buffer tubes. Adjustable blades ensure the fiber is not nicked during stripping .

Stripping Procedures

1. Layer-by-Layer Stripping: Multi-layer cables must be stripped progressively. Start with the outer jacket, then remove aramid yarn, followed by the buffer coating. Each layer requires careful handling to avoid damaging underlying fibers .
2. Proper Tool Selection: Choose a stripper compatible with the fiber diameter and coating type. For single-fiber cables, hand strippers or heated tools may suffice, while automated systems are preferred for high-volume or precision applications .
3. Clean and Straight Cuts: Ensure the stripped fiber ends are straight and free of jagged edges. Worn blades or improper technique can create nicks or scratches, which may lead to cracks under stress or thermal cycling, compromising signal integrity .
4. Maintenance: Regularly maintain and sharpen stripping tools to preserve precision and prevent accidental fiber damage .
5. Special Considerations: For “window strip” operations, remove a short section of coating from the middle of the fiber for applications like fiber Bragg gratings. Automated or thermal strippers are particularly effective for these tasks .

Best Practices

• Avoid using generic wire strippers or knives, as they can damage the fiber core.
• Verify the stripped length matches the requirements for splicing or connectorization.
• Use protective eyewear and follow safety protocols when handling fibers and tools.
• For high-strength splices, ensure the fiber maintains tensile strength above 20 N after stripping . By selecting the appropriate tool and following careful, layer-specific procedures, technicians can achieve clean, nick-free fiber ends, ensuring optimal performance and long-term reliability of optical networks.