Which statement correctly describes field termination of most single-mode fibers?

Which statement correctly describes field termination of most single-mode fibers?

• A. In the field, they are typically terminated with pigtails
• B. In the field, they are terminated with bare fiber ends
• C. In the field, they are terminated with splices
• D. In the field, they are terminated with ferrules

Answer: (A)

Field termination means finishing the fiber right at the installation site so it can be plugged into a piece of equipment or into a patch panel. For most single-mode fibers, the practical approach is to splice the field fiber to a short length of fiber that already has a connector on the far end—this is called a pigtail. Splicing to a pigtail creates a connectorized end efficiently, so the field worker ends up with a ready-to-mate connector and ferrule that fits into standard adapters. The pigtail approach also provides good strain relief and keeps the delicate fiber inside a protective ferrule and housing, reducing the risk of damage during handling in the field. Bare fiber ends and improvised terminations are much more vulnerable to contamination, misalignment, and breakage, while ferrules are part of the connector assembly used to maintain alignment and protection.

Field termination means finishing the fiber right at the installation site so it can be plugged into a piece of equipment or into a patch panel. For most single-mode fibers, the practical approach is to splice the field fiber to a short length of fiber that already has a connector on the far end—this is called a pigtail. Splicing to a pigtail creates a connectorized end efficiently, so the field worker ends up with a ready-to-mate connector and ferrule that fits into standard adapters. The pigtail approach also provides good strain relief and keeps the delicate fiber inside a protective ferrule and housing, reducing the risk of damage during handling in the field. Bare fiber ends and improvised terminations are much more vulnerable to contamination, misalignment, and breakage, while ferrules are part of the connector assembly used to maintain alignment and protection.