A fiber optic pigtail, also known as a fiber optic cable tail, is a type of fiber optic cable assembly that provides connection between fiber optic components or fiber optic cables. The connector end is polished and tested under factory conditions, ensuring low insertion loss and high return loss. 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. The most urgent stage of the process is, in fact, separating fiber optic pigtail, also known as pigtail fiber or pigtail fiber optic cable.