LC, or Lucent Connector, is a small form-factor connector that provides reliable and compact connections, especially in high-density environments. High density: LC connectors are half the size of a standard SC connector, which means that more connections can be made in limited. A fiber optic pigtail is a short length of optical fiber —typically 0. Its push-pull design allows. Executive Summary: A fiber optic pigtail is one of the most commonly specified yet least understood components in structured cabling. Its defining characteristic is a 1. It primarily finds its application in terminating optical fibers on networking equipment, including patch panels, distribution frames, or optical transceivers.