What tools are used for stripping butterfly-shaped optical cables

Stripping butterfly-shaped optical cables requires careful, layer-by-layer removal of the jacket, aramid yarn, and buffer coatings using precision fiber strippers to avoid damaging the glass fibers.

Layer-by-

Layer Stripping

Butterfly cables consist of multiple fibers in a flat ribbon, typically with an outer jacket, aramid yarn for strength, and individual fiber buffers. Each layer must be stripped progressively, not all at once, to prevent damage to the fibers underneath. The general sequence is: Outer Jacket: Use a wire or fiber optic jacket stripper sized for the cable diameter.

Cut carefully to avoid nicking the aramid yarn or inner fibers. Aramid Yarn: After removing the jacket, trim or pull back the aramid yarn. These fibers provide tensile strength, so avoid cutting them too short.

Buffer Coatings: Each fiber has a primary (250 µm) and sometimes secondary buffer. Use a precision fiber stripper to remove these coatings down to the 125 µm glass cladding.

Tools and Methods

Mechanical Strippers: Handheld strippers with precision slots for different fiber diameters are common. They allow controlled removal of coatings without touching the glass core. Thermal Strippers: Heated tools soften the buffer coating, making it easier to remove, especially for tight or multi-layered fibers.

Automated Stripping Machines: For high-volume or consistent results, automated tools strip multiple fibers simultaneously with minimal operator skill required. Specialized Ribbon Strippers: Butterfly cables may require strippers designed for flat ribbon fibers to remove multiple fibers' coatings at once without misalignment.

Best Practices

Inspect Each Layer: After stripping, check for nicks or scratches on the fibers. Even minor damage can lead to cracks or signal loss. Maintain Tools: Keep blades sharp and calibrated.

Adjustable strippers allow fine-tuning for different fiber diameters. Work with Excess Fiber: Leave extra fiber length to allow for mistakes; broken fibers can be re-stripped without wasting the entire cable. Avoid Generic Tools: Do not use standard wire cutters or knives, as they can create micro-fractures in the glass.

Summary

Stripping butterfly-shaped optical cables is a precision task requiring careful layer-by-layer removal, the right tools, and attention to detail. Using mechanical, thermal, or automated fiber strippers, inspecting fibers after each step, and maintaining proper technique ensures signal integrity and reliable connectorization.