Method for fixing the fiber tail of the Fiber splice

Properly fixing a fiber tail involves careful stripping, cleaning, cleaving, splicing, and protecting the exposed fiber to ensure a stable, low-loss connection.

Step 1: Prepare the Fiber Tail

Begin by stripping the fiber jacket and coating using a specialized fiber stripper, leaving only the bare glass core exposed. This step must be done carefully to avoid nicking or scratching the fiber, which can cause signal loss or breakage .

Step 2: Clean the Fiber

Use lint-free wipes and 99% isopropyl alcohol to clean the exposed fiber until it is free of dust, oils, or debris. Proper cleaning is critical because even microscopic contaminants can degrade the splice quality .

Step 3: Cleave the Fiber

Employ a high-precision fiber cleaver to create a flat, perpendicular end face on the fiber tail. A clean cleave ensures that the fiber ends align perfectly during splicing, minimizing insertion loss .

Step 4: Splice the Fiber

• Fusion Splicing: Align the prepared fiber tail with the corresponding fiber in a fusion splicer, which uses an electric arc to weld the fibers together. This method provides the lowest loss and highest long-term reliability .
• Mechanical Splicing: If using a mechanical splice, insert the fiber tail into the splice holder with index-matching gel between the fibers. The clamp secures the fibers in precise alignment, suitable for multimode fibers or quick installations .

Step 5: Protect the Splice

Slide a heat-shrink splice protection sleeve over the joint before splicing. After the splice is complete, shrink the sleeve using the splicer's oven or a heat source. This creates a rigid, waterproof shield that protects the fragile fiber tail from bending or breaking .

Step 6: Organize in a Splice Tray

Place the protected fiber tail in a fiber splice tray inside an enclosure. This ensures proper bend radius, prevents stress on the splice, and allows for neat cable management and labeling .

Additional Tips

• Always handle the fiber tail gently; the glass is extremely fragile.
• Avoid touching the cleaved end with fingers or tools.
• Verify the splice quality using an optical power meter or OTDR to ensure minimal signal loss . By following these steps, the fiber tail of a splice is securely fixed, protected, and ready for long-term network operation with minimal signal degradation.