An LC fiber optic splicing coil is used to manage and protect the bare fiber during fusion splicing of LC connectors, ensuring low-loss, reliable terminations.

Purpose and Function

An LC splicing coil is typically a small, flexible coil or loop used to hold the bare fiber in a controlled configuration during the fusion splicing process. It prevents excessive bending, kinking, or stress on the fiber, which could increase signal loss or cause breakage. The coil also helps maintain the minimum bend radius required for single-mode or multimode fibers, especially when working with 900µm tight-buffered fibers commonly used with LC splice-on connectors .

LC Splice-On Connectors

LC splice-on connectors are field-installable connectors that combine the precision of factory-polished ferrules with the flexibility of on-site termination. They are designed for fusion splicing to the incoming fiber, with the bare fiber end inserted into the connector and spliced using a fusion splicer . Key features include:

• Compact LC form factor suitable for high-density patch panels and transceivers .
• Factory-polished ferrules for low insertion loss and high return loss.
• Compatibility with standard fusion splicers and 900µm tight-buffered fibers .
• Field efficiency, reducing the need for polishing, adhesives, or crimping in the field .

Usage in the Field

During installation:

1. The bare fiber is stripped and cleaned.
2. The fiber is inserted into the LC splice-on connector.
3. The fiber is held in the splicing coil to maintain proper bend radius and alignment.
4. A fusion splicer is used to join the fiber to the connector ferrule.
5. The completed splice is secured and tested for insertion loss and return loss. Using a splicing coil ensures consistent, low-loss terminations and protects the fiber from mechanical stress during handling, which is critical in data centers, enterprise networks, and telecom environments .

Advantages

• Reduces fiber handling errors and breakage.
• Maintains optimal bend radius for single-mode or multimode fibers.
• Supports high-density LC installations with minimal rework.
• Compatible with fusion splicing platforms and standard field practices . In summary, an LC fiber optic splicing coil is an essential accessory for field termination of LC splice-on connectors, providing fiber management, protection, and improved splicing reliability in professional fiber optic deployments.