COUPLERS
Couplers allow the connection of two fiber optic connectors or cables, typically to extend the length of a fiber optic link.
PATCHCORDS
Patch cords are short lengths of fiber optic cable with connectors on both ends, used to connect devices or patch panels within a network.
PIGTAILS
Pigtails are short lengths of optical fiber with a connector pre-installed on one end. They are used for splicing or terminating cables.