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The function of fiber optic fusion splicers for connecting pigtails

Fiber and communications infrastructure knowledge brief Published 09 Feb 2024

Prepared for preliminary research by the ENSAA knowledge desk. Confirm optical interfaces, port or core capacity, electrical input and output, enclosure protection, thermal design and installation limits against current standards and product documentation.

Yes, fiber optic fusion splicers commonly use pigtails to create low-loss, permanent connections between incoming fiber cables and pre-terminated connectors. What Are Fiber Optic Pigtails? A fiber optic pigtail is a short length of optical fiber with a factory-terminated connector on one end and a bare, exposed fiber on the other.

The bare end is designed to be permanently fused to the incoming fiber using a fusion splicer, while the connector end plugs into equipment, patch panels, or optical distribution frames. Pigtails are widely used in both single-mode and multimode applications, and they are particularly common in 99% of single-mode fiber deployments.

Role of Pigtails in Fusion Splicing

Fusion splicing is the process of permanently joining two optical fibers using heat, creating a seamless, low-loss connection. Pigtails are integral to this process because they allow technicians to: Avoid field polishing and connector assembly, which can be error-prone. Ensure consistent, high-quality terminations by moving delicate connector work to a controlled factory environment.

Quickly terminate bulk fiber runs, such as incoming outside plant cables, to indoor fiber networks. In practice, the bare end of the pigtail is aligned and fused to the incoming fiber using a fusion splicer, while the connector end is ready for immediate use in the network.

Advantages of Using Pigtails

Reduced signal loss and back reflection compared to field-terminated connectors. Faster installation and lower labor costs, especially when using pigtailed splice cassettes in data centers or inside plant applications. Flexibility in connecting different fiber types or lengths without needing custom connectors in the field.

Summary

Fiber optic fusion splicers do use pigtails extensively, particularly for terminating incoming fiber to pre-connectorized ends in a reliable, low-loss manner. Pigtails simplify field installations, improve network performance, and are a standard component in modern fiber optic splicing workflows.

The function of fiber optic fusion splicers for connecting pigtails - ENSAA OPTICAL NETWORKS [PDF]

The function of fiber optic fusion splicers for connecting pigtails

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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