The fiber optic pigtail is a type of fiber optic cable with a pre-installed connector on one end while the other remains unterminated. This configuration allows the connector side to easily connect to equipment while the other end can be fused or mechanically spliced with other optical. If you have ever tried to install connectors directly onto the end of a fiber cable while perched on a ladder or cramped in a dark telecommunications closet, you know how difficult it can be. This article will show you what a fiber optic pigtail is. These terminations must be of the right style, installed in a.