The difference between optical fiber jumper and pigtail

Fiber optic jumpers are used as jumpers for equipment to fiber optic cabling links. They have a thick protective layer and are generally used for the connection between the optical module and the junction box.

Only one end of the pigtail has a connector, and the other end is a broken end of the fiber core. It is connected to other fiber cores by welding. It often appears in fiber optic terminal boxes and is used to connect fiber optic cables. and fiber optic transceivers (couplers, jumpers, etc. are also used between them).

Optical fiber connector refers to a coupler (flange), which is a device for detachable (movable) connection between optical fibers and optical fibers. It precisely connects the two end faces of the fiber to maximize the light energy output of the delivery fiber. It is the basic requirement of fiber optic connectors to maximize the coupling into the receiving optical fiber and minimize the impact on the system due to its intervention in the optical link. Simply put, it is used to connect pigtails and fiber optic jumpers.

Optical fiber connectors also affect the reliability and performance of optical transmission systems to a certain extent. First of all, the optical cable comes in from the outside, and the optical cable must be fused in the optical cable box (that is, the junction box). Optical cable fusion is a technology. The optical cable needs to be stripped, and the thin optical fiber in the optical cable is fused with a pigtail, and put into the box after welding, so that our pigtail can come out. The head of the optical fiber is connected to the ODF (a shelf, connected with a coupler), and the other side of the shelf is also a pigtail (you can also use a fiber optic jumper), which is connected to the photoelectric converter, and the network cable of the photoelectric transceiver is connected to the router. ----Switch---LAN---Host.

In the above steps, the distribution frame of the optical fiber can be ignored, and the pigtail can be directly connected to the optical fiber transceiver after it comes out, without a coupler.

A coupler is what connects 2 pigtails (or fiber patch cords) together. A fiber optic coupler is an active connection (commonly known as a flange) of two optical fibers or pigtails.

The optical fiber terminal box is the terminal connector of the optical cable, one end is the optical cable, and the other end is the pigtail, which is equivalent to the device that divides the optical cable into a single optical fiber.

The fiber splice box is used to connect two optical cables into one long optical cable, and the two cannot be used interchangeably. The optical cable and the optical end are connected through the optical end box, that is, the optical end can only be inserted into the pigtail.

Is it possible to understand the junction box and the junction box in this way? The two ends of the optical fiber are fused, but the former is the fusion of the optical cable and the pigtail, and the latter is the fusion between the optical cables. This is basically true. Is a junction box the same as a junction box?

The answer is: not the same.

The distribution box is fully sealed and waterproof, but the pigtail cannot be fixed; the junction box is not waterproof, the optical cable is fixed on one side of the internal structure, and the pigtail coupler is fixed on the other side to connect the optical fiber or pigtail. It's just that the connection part is active, not soldered.

The coupler can only connect two pigtails to separate SC/PC and FC/PC interfaces, and the optical cable and pigtails are spliced by a fusion splicer without dead ends.