How to use a stacked fiber optic splice box

A stacked fiber optic splice box organizes multiple splice trays to securely manage and protect spliced fibers while maintaining proper bend radius and accessibility.

Preparing the Fibers

Strip the Cable Jacket: Remove the outer jacket, shielding, and armor to expose the loose tubes or buffer tubes, following the cable manufacturer's instructions for proper lengths and handling ( ). Clean the Fibers: Use lint-free wipes and isopropyl alcohol to remove dust, dirt, or coating residues from the fiber ends ( ). Cleave the Fibers: Employ a precision fiber cleaver to create smooth, perpendicular end faces, which is critical for low splice loss ( ).

Splicing the Fibers

Fusion Splicing: Use a fusion splicer to weld fiber ends together for minimal signal loss and high reliability ( ). Mechanical Splicing: Align fibers in a mechanical splice connector with index-matching gel for faster installation, though with slightly higher insertion loss ( ). Installing Splice Trays in the Stacking UnitInstall Splice Holders: Place fusion or mechanical splices into the designated holders on the base of each splice tray ( ).

Route Fibers: Loop fibers into the tray to determine required slack, ensuring at least 1 inch extra for trimming and coiling ( ). Secure Fibers: Use crimping tabs or cable ties to secure loose tube or tight-buffered fibers. For multiple buffer tubes, secure inner tabs first ( ).

Coil Excess Fiber: Carefully coil fibers within the tray, avoiding tight bends or twists, and maintain proper bend radius ( ).

Stacking and Organizing Trays

Stack Trays: Insert completed splice trays into the stacking unit, fastening trays together as needed. Trays should be accessible like pages in a book for maintenance ( ). Cover and Protect: Snap the clear cover over each tray and ensure all fibers are inside retaining tabs before closing the stacking unit ( ).

Labeling: Clearly label each tray and fiber for easy identification and future troubleshooting ( ).

Securing the Splice Box

Cable Entry and Sealing: Insert cables into designated entry points, use sealing rings or tape to prevent moisture ingress, and secure cables with clamps ( ). Grounding: Properly ground metallic shielding or strength members according to manufacturer instructions ( ).

Maintenance Tips

Access trays carefully for inspection or additional splicing, treating stacked trays like pages in a book ( ). Avoid excessive pulling, bending, or crushing of fibers to maintain signal integrity ( ). Follow manufacturer-specific instructions for tray stacking, fiber routing, and securing methods to ensure long-term reliability ( ).

By following these steps, a stacked fiber optic splice box can efficiently manage multiple splices, protect fibers from environmental stress, and maintain high-performance network connections.