The pigtail is fusion spliced or connected directly to the optical fiber cable, resulting in a secure and reliable connection. This article will show you what a fiber optic pigtail is. The success of a network in fiber optic cable installation heavily. When you build or upgrade a fiber network, the same four words pop up everywhere— fiber optic (bare fiber), pigtail, patch cord, optical cable. They're related, but they are not interchangeable. Mixing them up drives costs higher, increases loss, and slows your rollout. It is usually suitable for field termination using a mechanical or fusion splicer. Compared with quick termination or epoxy and polish connections placed on the field. Fiber optic pigtail is a fiber optic cable terminated with a factory-installed connector on one end, leaving the other end terminated.