Fiber Optic Pigtail Guide: Types, Splicing, and Selection
A fiber optic pigtail is a short length of optical fiber with a connector on one end and bare fiber on the other. Pigtails are used to terminate fiber optic cables by fusion splicing the bare end to the cable fibers.
Types of Pigtails
Single-mode Pigtails: For OS1/OS2 fibers, typically with PC or APC polish. Used in long-distance and high-bandwidth applications. Available with SC, LC, FC connectors.
Multimode Pigtails: For OM1-OM5 fibers, typically with PC polish. Used in data centers and short-distance links.
Armored Pigtails: Include a metal sleeve for protection in harsh environments. More durable but less flexible.
Connector Types
SC pigtails are commonly used in GPON/EPON networks, patch panels, and ODFs. LC pigtails are preferred for high-density applications like data centers. FC pigtails are found in test equipment.
Polish Types
PC (Physical Contact) polish for multimode. UPC (Ultra Physical Contact) offers better return loss for single-mode. APC (Angled Physical Contact) provides the best return loss, required for RF video and GPON. APC connectors are identifiable by their green color.
Splicing Tips
Always clean the fiber before splicing, use the correct cleaver for clean breaks, verify splice loss with an OTDR, and protect splices with heat-shrink sleeves. Store excess pigtail length neatly in splice trays with proper bend radius.
