A pigtail fiber indicates a short length of optical fiber cable that has a pigtail connector (for example, SC, FC, ST, LC, etc. ) fitted on one end and the other end undressed (for connection through fusion or splicing) to the main fiber optic cable. Fiber pigtails are simple in appearance, yet essential in function. They are the bridge between fiber optic cables in the field and the equipment or patch panels that manage them. By combining factory-installed connectors with spliced bare fiber, pigtails ensure that network installers can create. Executive Summary: A fiber optic pigtail is one of the most commonly specified yet least understood components in structured cabling. It's ready to use out of the box.