Stripping Method for Dual-Core Optical Cables

Stripping dual-core optical cables requires careful, layer-by-layer removal of the jacket, aramid yarn, and buffer coatings to expose the fibers without causing damage.

Key Steps for Stripping Dual-

Core Optical Fiber

Identify Cable Layers: Dual-core optical cables typically have an outer jacket, aramid yarn for tensile strength, and individual fiber buffers (primary and secondary coatings) around each core. Each layer must be stripped progressively, not all at once, to avoid damaging the fibers underneath. Select the Right Tools: Use precision fiber strippers designed for the specific fiber and coating diameters.

Tools may be mechanical, thermal, or automated. Mechanical strippers remove coatings with matched blades, while thermal or heated tools soften the buffer for easier removal. Automated systems provide consistent, repeatable results with minimal operator skill.

Strip the Outer Jacket: Carefully cut and remove the outer sheath to the required length, ensuring the aramid yarn and inner fibers remain intact. Avoid aggressive cutting or pulling, which can disturb the inner cores. Remove Aramid Yarn: Peel back or trim the aramid yarn carefully.

These fibers contribute to tensile strength, so avoid cutting or fraying them unnecessarily. Strip Fiber Buffers: Each fiber core has a primary and secondary buffer coating. Use a fiber buffer stripper to remove these coatings cleanly.

Ensure the cut edge is straight and free of jagged edges. The glass fiber itself must never be nicked or scratched, as even minor damage can lead to cracks and connection failure. Clean and Inspect: After stripping, clean the exposed fibers with lint-free wipes and high-purity alcohol to remove any residue.

Inspect under a microscope for scratches or nicks before proceeding to cleaving or connectorization. Optional Automated Stripping: For high-volume or precision applications, automated stripping units like the AutoStrip II can vaporize coatings cleanly, providing high-strength, debris-free fibers with controlled strip lengths.

Best Practices

Always match the stripper tool to the fiber diameter and coating type. Strip only the length required for termination to avoid weakening the fiber. Maintain sharp blades and clean tools to prevent jagged cuts.

Handle fibers gently to avoid microfractures that can compromise long-term reliability. Perform a quick bend test or microscopic inspection to ensure fiber integrity before splicing or connectorization. By following these steps and using the appropriate tools, dual-core optical cables can be stripped safely and efficiently, ensuring high-quality terminations and minimizing the risk of fiber damage.