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What are the types of pigtails?

People often don’t know the difference between fiber optic jumpers and pigtails, let alone the types of pigtails. Today, the editor will talk about pigtails, talk about the types of pigtails, and how should we distinguish between optical fiber jumpers and pigtails?


What are the types of pigtails?

Pigtails are divided into single-mode pigtails and multi-mode pigtails, which can be distinguished by color, wavelength and transmission distance. The color of the outer sheath of the multimode pigtail is orange, the wavelength is 850nm, and the transmission distance is 500m. The distance is longer, up to 10km or 40km.

In the attention notes of many pigtail connectors, you can see the words “FC/PC”, SC/PC” and so on. The letter before “/” indicates the model of the pigtail connector, and the letter after it indicates the pigtail connector. The grinding method. The pigtail is divided into multi-mode pigtail and single-mode pigtail. The multi-mode pigtail is orange, the wavelength is 850nm, and the transmission distance is 5Km, which is used for short-distance interconnection.

The single-mode pigtail is yellow and has two wavelengths, 1310nm and 1550nm, and the transmission distances are 10km and 40km respectively. ITU-T International Telecommunication Union Telecommunications Standardization Organization (ITU-T for ITU Telecommunication Standardization Sector) has regulated three commonly used optical fibers: optical fiber conforming to G.652 specification, optical fiber conforming to G.653 specification, and optical fiber conforming to G.655 specification.

How to distinguish between optical fiber jumper and pigtail

Optical fiber jumper refers to the optical fiber directly connected to the desktop computer or equipment to facilitate the connection and management of the equipment. It is used as a patch cord from the equipment to the fiber optic cabling link. It has a thicker protective layer and is generally used for the connection between the optical transceiver and the terminal box.

Optical fiber jumper structure

Fiber optic patch cords are similar to coaxial cables, but without the mesh shield. In the center is the glass core for light propagation. In a multimode fiber, the diameter of the core is 15 μm to 50 μm, roughly equivalent to the thickness of a human hair. The diameter of the single-mode fiber core is 8 μm to 10 μm. The core is surrounded by a glass envelope with a lower refractive index than the core to keep the fiber in the core. On the outside is a thin plastic jacket to protect the envelope.

Fiber jumper classification

Optical fiber jumpers can be divided into common silicon-based optical fiber single-mode and multi-mode jumpers according to different transmission media, and other optical fiber jumpers such as plastics as transmission media; according to the structure of the connector, it can be divided into: FC Jumper, SC jumper, ST jumper, LC jumper, MTRJ jumper, MPO jumper, MU jumper, SMA jumper, FDDI jumper, E2000 jumper, DIN4 jumper, D4 jumper, etc. form. The more common fiber optic jumpers can also be divided into FC-FC, FC-SC, FC-LC, FC-ST, SC-SC, SC-ST, etc.

Single-mode fiber (Single-mode Fiber): Generally, the fiber optic jumper is indicated by yellow, and the connector and protective sleeve are blue; the transmission distance is longer.

Multi-mode Fiber (Multi-mode Fiber): Generally, fiber optic jumpers are represented in orange, and some are represented in gray, and the connectors and protective sleeves are beige or black;

The above is what are the types of pigtails and how to distinguish between optical fiber jumpers and pigtails. Of course, pigtails should avoid looping as much as possible during use, which can reduce the attenuation of optical signals during transmission.