Optical distribution box uses optical cable

The optical cable that goes into an optical distribution box is typically a distribution fiber optic cable or an FTTH drop cable, which can be terminated, spliced, or connected to splitters inside the box.

Types of Optical Cables Used

1. Distribution Fiber Optic Cable These cables carry multiple fibers from the backbone or main fiber network to the distribution box. They are designed for durability and protection in both indoor and outdoor environments and are often used to connect the backbone network to the optical distribution box for further splitting or distribution to end users .
2. FTTH Drop Cable (Access Cable) For fiber-to-the-home (FTTH) or fiber-to-the-building (FTTB) applications, the optical distribution box connects to drop cables that run directly to the customer premises. These cables are usually pre-connectorized or spliced inside the box to connect to the internal network or optical splitters .

Connection and Termination

Inside the optical distribution box, the incoming optical cable is:

• Spliced to pigtails or patch cords using fusion or mechanical splicing.
• Connected to optical splitters if the network requires signal distribution to multiple endpoints.
• Organized in splice trays to maintain proper bend radius and prevent signal loss .

Considerations

• Cable Type: Single-mode fiber is most common for FTTH and long-distance distribution, while multi-mode fiber may be used in shorter indoor networks.
• Connector Type: SC, LC, or other standard connectors are used depending on the network design.
• Environmental Protection: Outdoor distribution boxes often require cables with waterproof and UV-resistant jackets to withstand environmental conditions . In summary, the optical distribution box serves as a central hub where distribution fiber optic cables or FTTH drop cables are terminated, spliced, and distributed to end users, ensuring organized, protected, and efficient fiber optic connectivity.