96 Fiber Optic Splice Box Method

Splicing in a 96-fiber optic splice box involves organizing fibers in trays, performing fusion or mechanical splicing, and securing cables with heat-shrinkable tubes inside a protective closure.

Overview

A 96-fiber optic splice closure (FOSC) is designed to accommodate up to 96 individual fiber cores, supporting multiple cable entries and providing environmental protection for spliced fibers. These closures are suitable for aerial, underground, pipeline, and hand-hole installations and are typically rated for extreme temperatures from -40°C to 65°C. They are IP68 waterproof and resistant to vibration, impact, and chemical corrosion.

Components

Key components of a 96-fiber splice box include: FOSC Cover and Base: Protects the internal splices and provides structural support. Fiber Optic Splice Trays (FOST): Usually 4–6 trays, each holding up to 24 fibers, where splicing occurs.

Heat-

Shrinkable Protective Sleeves: Used to secure and protect individual splices. Cable Ports: Round or oval ports with heat-shrink sealing for cable entry without cutting. Seal Fittings and Adhesive Tape: Ensure closure is airtight and waterproof.

Earthing Device: Provides grounding for metallic components if required.

Splicing Method

Preparation: Strip the outer jacket of the fiber cables carefully. Clean and cleave each fiber to ensure smooth, perpendicular ends. Splice Type Selection: Fusion Splicing: Preferred for low insertion loss and long-term reliability.

Fibers are welded together using a fusion splicer. Mechanical Splicing: Faster installation without specialized equipment; fibers are aligned in a mechanical holder. Tray Organization: Place fibers in the splice trays, keeping them organized to avoid bending below the minimum radius (typically >30 mm),.

Each tray can hold up to 24 fibers; multiple trays are stacked to accommodate all 96 fibers. Securing Splices: Use heat-shrinkable sleeves to protect each splice. Route fibers neatly along tray channels to prevent stress or microbends.

Cable Entry and Sealing: Insert cables through designated ports and seal with heat-shrink or adhesive fittings. Ensure all ports are sealed to maintain IP68 waterproof rating. Final Assembly: Close the FOSC cover and secure with plastic hoops or clamps.

Perform pressure testing if the closure includes a testing valve.

Best Practices

Maintain a minimum bending radius to prevent signal loss. Label fibers and trays for easy identification and future maintenance. Avoid excessive fiber slack; store extra fiber in loops within trays.

Ensure the closure is mounted securely (wall, pole, or aerial hanger) to prevent mechanical stress. By following these steps, a 96-fiber optic splice box can be efficiently spliced, organized, and protected, ensuring low signal loss, long-term stability, and environmental resilience.