How to strip a double-wire optical cable

Double-wire optical cables should be stripped progressively, layer by layer, using precision fiber strippers to avoid damaging the glass fibers or aramid strength members.

Key Steps for Stripping

1. Identify Cable Layers: Double-wire optical cables typically have multiple layers: an outer jacket, aramid yarn (strength members), buffer coatings, and the acrylate coating directly on the glass fiber. Each layer must be stripped individually to the required length for connectorization or splicing . 2. Use Proper Tools:

• Mechanical Fiber Strippers: Handheld strippers with precision notches sized for specific coating diameters (e.g., 250 µm, 900 µm) are ideal for removing buffer and acrylate coatings without nicking the fiber .
• Cable Strippers: For the outer jacket, use adjustable cable strippers or scissors designed for optical cables, ensuring the blade depth is set to avoid cutting underlying layers .
• Fiber Grippers: Textured rubber grippers can hold the fiber securely during stripping, preventing microfractures . 3. Progressive Layer Removal:
• Outer Jacket: Strip the outer sheath first using a cable stripper or appropriately sized notch.
• Aramid Yarn: Carefully cut or pull back the aramid fibers without damaging the fiber core; these fibers provide tensile strength .
• Buffer Coating: Use a precision fiber stripper to remove the buffer down to the acrylate coating.
• Acrylate Coating: Strip the final protective layer to expose the bare glass fiber, typically 30–40 mm in length, depending on connector or splicing requirements . 4. Cleaning: After stripping, clean the bare fiber with a lint-free wipe and high-purity alcohol or a dedicated fiber cleaner to remove any residue . 5. Maintenance and Safety:
• Keep stripping tools clean and sharp; residue or dull blades can damage fibers .
• Never use generic wire strippers or knives, as these can create nicks or scratches that lead to signal loss or fiber breakage .
• Strip fibers one at a time to maintain control and prevent accidental damage.

Additional Tips

• For double-wire cables, ensure both fibers are stripped to the same length for uniform connectorization.
• Avoid stripping more than 50 mm at a time to reduce stress on the fiber .
• Use color-coded or multi-hole strippers for different coating diameters to improve efficiency and accuracy . By following these methods, you can safely and efficiently prepare double-wire optical cables for splicing or connectorization while minimizing the risk of fiber damage and signal loss.