Tail fiber, also known as tail wire or pigtail wire. It has a connector at one end and a broken end of a fiber optic cable core at the other end, which is fused and connected to other fiber optic cable cores. In other words, cutting a jumper in two segments from the center creates two tail fibers. Tail fibers often appear in fiber optic terminal boxes, used to connect optical cables with fiber optic transceivers.
Classification of tail fibers
Like fiber optic jumpers, pigtails are also divided into single mode pigtails and multimode pigtails. There are certain differences in color, wavelength, and transmission interval between the two. Generally speaking, the multimode tail fiber is orange, with a working wavelength of 850nm and a transmission interval of about 500m; The color of the single mode tail fiber is yellow, and the operating wavelength is 1310m or 1550m. It can transmit at a longer interval of about 10-40km. In addition, according to the different number of fiber cores, pigtails can be divided into single core pigtails, 4-core pigtails, 6-core pigtails, 8-core pigtails, 12-core pigtails, 24-core pigtails, etc., which can be selected according to different needs.
Application of tail fiber
One of the main functions of tail fibers is to connect. Fiber optic and pigtail connections fuse the bare fibers and pigtail fibers in the fiber optic cable into a whole, while the pigtail has a separate fiber optic head that is connected to the fiber optic transceiver, connecting the fiber optic and twisted pair to the information socket. In the process of optical fiber welding, the following primary things are commonly used: optical terminal box, optical fiber transceiver, pigtail, coupler, special Wire stripper, optical fiber cutter, etc. The commonly used tail fibers in transmission systems include five interfaces: SC/PC, FC/PC, LC/PC, E2000/APC, ST/PC.
There are five types of tail fibers commonly used in transmission systems:
FC-SC type, which is commonly referred to as circular to square tail fiber. FC connects to the ODF box and SC connects to the optical port of the device. This type of fiber optic connector is widely used in early SBS and Optix equipment.
FC-FC type, commonly known as circular to circular tail fiber. Usually used as a jumper between ODF frames.
SC-SC type, commonly known as square to square tail fiber, is generally used for connecting optical panels between devices.
SC-LC type, commonly known as small square end pigtail for LC interface, is classified as a plug-in connector. Currently, Huawei OSN series equipment, ZTE S series equipment, and earlier Lucent wavelength division equipment all use this fiber optic connector.
The LC-LC type is generally used in internal fiber connections between wavelength division devices, but this application is relatively rare.
