Using Ribbon Optical Cable Fusion Splicer

Ribbon optical cable fusion splicing involves aligning multiple fibers in a ribbon simultaneously and fusing them with an electric arc to create low-loss, reliable connections.

Overview of Ribbon Fusion Splicing

Ribbon fusion splicing, also called mass fusion splicing, allows multiple fibers in a ribbon cable to be spliced at once, significantly increasing efficiency compared to single-fiber splicing . A fusion splicer performs two main functions: precise alignment of the fibers and melting them together using an electric arc . Proper fiber preparation and cleaving are critical, as the quality of the splice depends on the accuracy of the fiber end faces .

Equipment and Tools Needed

• Fusion Splicer: Designed for ribbon cables, often with optical core alignment (profile alignment) or LID (Local Injection and Detection) systems .
• Precision Fiber Cleaver: Ensures fibers are cleaved to exact tolerances recommended by the splicer manufacturer .
• Fiber Stripping and Cleaning Tools: For removing the protective coating and cleaning fibers before splicing .
• Heat Shrink Oven or Clamp-on Protectors: To protect the finished splice from moisture and mechanical stress .
• Optional Ribbonizing Tools: For arranging loose fibers into a ribbon format when using 200-micron fibers .

Step-by-Step Process

1. Prepare the Ribbon Cable: Strip the outer jacket and buffer coating to expose the fibers. Clean the fibers with alcohol wipes to remove debris .
2. Cleaving: Use a precision cleaver to create flat, perpendicular fiber ends. The cleave quality directly affects splice loss .
3. Align Fibers in the Splicer: Insert the ribbon into the splicer's fiber holder. The splicer uses optical or LID alignment to detect fiber cores and align them automatically .
4. Perform Fusion Splice: The splicer generates an electric arc, melting the fiber ends together. The splicer pushes the fibers forward as they melt to ensure a strong joint .
5. Estimate Splice Loss: Many splicers provide an estimated splice loss using optical or video analysis. For precise measurement, use an OTDR from both ends of the fiber .
6. Protect the Splice: Apply a heat-shrink sleeve or clamp-on protector to shield the splice from environmental damage .

Tips and Best Practices

• Check Alignment and Cleave: Always verify fiber alignment and cleave quality before splicing to minimize loss .
• Altitude Compensation: Some splicers adjust arc current automatically for high-altitude conditions .
• Battery Management: Ensure the splicer has sufficient battery life to complete splicing tasks .
• Ribbonizing Loose Fibers: For 200-micron fibers, use a ribbonizing tool to arrange fibers into a 250-micron spacing ribbon before splicing .
• OTDR Verification: Measure splice loss from both ends to account for differences in mode field diameter and backscatter variations .

Conclusion

Using a ribbon optical cable fusion splicer efficiently requires proper fiber preparation, precise cleaving, accurate alignment, and careful protection of the splice. Following manufacturer guidelines and using OTDR verification ensures low-loss, reliable splices suitable for high-density fiber networks .