The protruding parts of the fiber optic pigtail include

A fiber optic pigtail has two main protruding parts: the factory-terminated connector and the bare fiber end.Connector EndThe connector end is pre-terminated and polished in the factory to ensure low insertion loss and high return loss. Common connector types include LC, SC, FC, and ST, each with specific ferrule designs and alignment mechanisms to ensure precise optical connections with devices, ODF ports, or patch panels . The connector protrudes from the pigtail to allow easy insertion into network equipment or splice trays.Bare Fiber EndThe bare fiber end is the unconnectorized portion of the pigtail, designed to be fusion or mechanically spliced to the main fiber optic cable in the field . This end protrudes to provide sufficient length for splicing, ensuring a low-loss, permanent joint. The bare fiber is typically protected by a buffer coating and may have a minimal jacket for handling, but it remains exposed for splicing purposes.Additional Structural FeaturesFiber Core and Cladding: The core carries the light signal, while the cladding ensures total internal reflection .Buffer Coating: Protects the fiber from physical damage and stress during handling and splicing .Outer Jacket: Some pigtails, especially armored or waterproof types, have an additional protective jacket to prevent damage from environmental factors . In summary, the protruding parts of a fiber optic pigtail are the connectorized end for device connection and the bare fiber end for splicing, with the fiber core, cladding, and buffer coating forming the internal structure that ensures signal integrity and durability .