The Fiber Pigtail, a foundational product in our Patch Cord and Pigtail line, plays a central role in achieving the industry's lowest insertion loss connections through the process of fusion splicing. 5m to 2m—that has a factory-terminated connector on one end and bare fiber on the other end. The bare fiber end. Executive Summary: A fiber optic pigtail is one of the most commonly specified yet least understood components in structured cabling. Get the wrong connector type, the wrong polish, or skip proper fusion splicing technique—and you're looking at elevated signal loss, increased back reflection, and a. Therefore, fiber optic pigtails play a vital role in modern network design.