Pigtail: Used in a terminal box to connect optical fibers in optical cables, connecting pigtail to jumpers via a terminal box coupler (adapter).

Jumper: Both ends of the jumper are movable joints that connect the pigtail to the device.

Optical cable terminal box: is in the optical cable laying terminal protection optical cable and tail fiber welding box.

Optical fiber coupler: is used for the movable connection of two optical fibers or pigtails commonly known as flanges.

Optical fiber terminal box: is the final connector of a optical cable, he is one end of the optical cable, the other end is the tail fiber, which is equivalent to a cable split into a single optical fiber equipment.

Optical fiber welding box: It is used to butt two optical cables into a long optical cable. The optical fiber terminal box and the optical fiber welding box are not interchangeable, the optical cable and the optical terminal machine is connected through the optical fiber terminal box, that is, the optical terminal machine can only plug the tail fiber.

Coupler: can only connect two pigtails and divided into SC/PC, FC/PC interface, and between the cable and pigtails is fused with the welding machine is dead.

Terminal box VS fuse box: The former is the fuse of optical cable and pigtail, the latter is the fuse between optical cable.

Connection box VS Terminal box: The connection box is fully sealed and waterproof, but it cannot hold the pigtail. The terminal box is not waterproof, and the internal structure can be fixed on one side of the cable and the other side of the pigtail.

Pigtail vs. Jumper: Only one end of pigtail is a movable connector; The two ends of the jumper are movable joints. There are many kinds of interfaces. Different interfaces require different couplers.