The pigtail consists of a fiber optic connector and a piece of fiber optic cable. Unlike the optic fiber patch, only one end of the pigtail has a fiber optic connector, while the other end is the broken end of the fiber optic core, which is used to connect a fiber optic transceiver or fiber optic equipment.
The difference between pigtail, fiber optic fiber patch and fiber optic cable
Fiber optic cable is a set of overall structure, by optical fiber, optical fiber skin, tensile layer, the outermost skin composition, optical fiber is a part of the cable.
Fiber optic patch are optic fiber patch from equipment to fiber optic wiring links, with connectors at both ends and cables in the middle. With a thick protective layer, it is generally used in the connection between the optical terminal machine and the terminal box, and is applied in some fields such as optical fiber communication system, optical fiber access network, optical fiber data transmission and local area network.
Only one end of the fiber pigtail has a connector, and the other end is a fiber optic cable core broken end, after welding with other fiber optic cable core. The fiber optic patch can also be used as a fiber optic pigtail.
The pigtail fiber is also known as naked optical fiber. One end of the tail fiber has fiber optic connectors, and the other end is the severed end of the fiber optic core. One end of the fiber 
optic connector is used for connecting equipment. The structure of the tailstock is very similar to that of a optic fiber patch. Simply put, a optic fiber patch cut in the middle is two tailstock. The tail fiber has various connectors. The diameter of the common pigtail fiber is usually 0.9mm and installed in the ODF device.
1、Classification
- SC/PC fiber pigtail (SC square clip connector)
- FC/PC fiber pigtail (FC round thread head)
- LC/PC fiber pigtail (LC square clip)
- ST/PC fiber pigtail (ST circular card connector)
- FC/PC fiber pigtail
- E2000/APC fiber pigtail
2、 Fiber type
Can be divided into multi-mode fiber tail and single-mode fiber tail, multi-mode fiber tail is generally orange, the wavelength of 850nm, the transmission distance is short, for short 
distance interconnection; Single-mode fiber pigtails are yellow, with wavelengths of 1310nm and 1550nm, and can be used for long-distance connections.
Fiber-optic tail fiber fusion technology
Fiber optic fusion technology is mainly used to fuse fiber and fiber or fiber and fiber pigtail, the fiber optic cable in the bare fiber and fiber pigtail fused together into a whole, and fiber pigtail has a separate fiber optic head. Connect the fiber and twisted pair to the information socket by connecting with the light module. The main tools used in the fusion process of optical fiber include: optical end box, optical module, fiber tail fiber, fiber coupler, special wire stripping pliers, fiber cutting knife, etc.
The use of fibers
- Optical fiber communication system
- Fiber access network
- Optical fiber data transmission equipment
- fiber CATV
- Local area network (LAN)
- Test equipment
- Fiber optic sensor
- Serial port server
