The optical fiber cold splice is used when two pigtails are butted. 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. It is used for optical fiber butt optical fiber or optical fiber docking pigtail, which is equivalent to making a joint, (fiber docking pigtail refers to the butt joint between the optical fiber and the core of the pigtail, not the pigtail head mentioned by the former), which is used for this kind. Fiber optic pigtail are utilized to terminate fiber optic cables via fusion or mechanical splicing. High-quality pigtail cables, coupled with correct fusion splicing practices offer the best performance possible for fiber optic cable terminations. This technique leverages the precision of factory termination, which consistently yields superior performance with extremely low insertion loss, often below 0. Fusion splicing allows for quick attachment, taking just a minute or less when using a fusion splicer, saving significant time and costs in field termination. Instead of building a connector from scratch in the field, you simply fuse the “bare” end of the pigtail to.