How to strip a 144 fiber optic cable

Stripping a 144-fiber optic cable requires careful, stepwise removal of the outer jacket, aramid yarn, and individual fiber buffers using specialized tools to avoid damaging the fibers.

Preparation and Safety

Before starting, ensure you have a clean, well-lit workspace free of dust and debris. Gather the necessary tools: fiber optic cable strippers, kevlar scissors, alcohol wipes, lint-free cloths, and optionally a fiber cleaver and inspection microscope for later termination steps . Always wear safety glasses to protect your eyes from fiber shards.

Step 1: Remove the Outer Jacket

1. Measure and mark the section of the cable to strip, typically 2–3 inches (50–75 mm) for initial access .
2. Use a fiber optic cable stripper or a utility knife carefully to cut the outer jacket. Avoid cutting too deep to prevent nicking the aramid yarn or fibers underneath .
3. Pull off the cut jacket section to expose the aramid yarn (Kevlar fibers).

Step 2: Cut and Manage Aramid Yarn

1. Use kevlar scissors to trim the aramid yarn close to the jacket end .
2. Wind the yarn into a bundle to make handling easier and prevent interference with the fibers.

Step 3: Strip the Fiber Buffers

1. Identify the tight-buffered fibers (typically 900 µm) and the primary coating (250 µm) on each fiber .
2. Using a fiber stripper, remove the buffer in small increments (about 6–8 mm at a time) at a 45-degree angle to reduce stress on the fiber .
3. For multi-layer strippers, use the appropriate groove for each buffer size. If your stripper has two grooves, the second groove can remove both 900 µm and 250 µm buffers in steps .
4. Repeat this process for each of the 144 fibers individually, taking care not to break or scratch the glass core .

Step 4: Clean the Fibers

1. Wipe each stripped fiber with alcohol and a lint-free cloth to remove debris and residue .
2. Inspect the fiber ends with a microscope or visual fault locator (VFL) to ensure they are clean and free of defects before termination or splicing .

Step 5: Handling and Safety Tips

• Always strip fibers progressively, layer by layer, rather than attempting to remove multiple layers at once .
• Keep cut fiber scraps in a designated container to prevent injury .
• Maintain sharp stripping tools and replace worn blades to ensure clean cuts and prevent fiber damage .
• Practice patience; breaking fibers is common when learning, and careful incremental stripping reduces the risk of damage . By following these steps, you can safely strip a 144-fiber optic cable, preparing it for splicing, termination, or connectorization while maintaining fiber integrity and network performance .