The SC fiber pigtails are pre-assembled pigtails with an SC connector. Because of the low cost, longevity, and ease of installation, SC pigtail is commonly used in both P2P and PON applications. Order the wrong buffer diameter or fiber grade and your splice tray turns into a mess. Quick answer: A fiber optic pigtail is a. A Fiber Pigtail is a single, short, usually tight-buffered, optical fiber that has an optical connector pre-installed on one end and a length of exposed fiber at the other end. This sensitive end is fusion spliced onto another single fiber (or fiber bundle), providing a robust and reliable link. Executive Summary: A fiber optic pigtail is one of the most commonly specified yet least understood components in structured cabling. It is usually suitable for field termination using a mechanical or fusion splicer. Visual inspection of endface by 400x microscope.