Tail fiber interface type and function

commonly used tail fiber interface type

Pigtail is also called the pigtail fiber, is the optical cable terminal box to the equipment to connect between the fiber. Pigtail is often divided into single-mode or Multimode, single-or dual-fiber, transmission distance, and tail fiber interface type. Currently on the market fiber optic equipment commonly used Pigtail interface types are: FC, SC, LC, st these four kinds.

FC Interface Type:
FC connector is also called Round with threaded connector (the most used on the wiring frame), is a metal joint, generally used in the ODF side, the number of metal joints can be inserted more than plastic.

FC Interface Physical Diagram

sc interface type:
SC connector is also called the card-type square connector (router switch used on the most), is a standard square-type connector, the use of engineering plastics, with high temperature, not easy oxidation advantages. The transmission device side optical interface is generally used SC connector.

SC Interface physical diagram

LC Interface Type:
LC connectors are similar in shape to SC connectors and smaller than SC connectors.

LC Interface Physical Diagram

St Connector:
St connectors are also called snap-in round joints, for 10base-f connections, the connector is usually St type.

St Interface Physical diagram

the role of Pigtail

The role of pigtail is mainly used to connect the two ends of the connector, tail fiber at one end with the fiber connector welding, the other end through a special connector (FC, SC, LC, ST) with the fiber transceiver or fiber module connected to form optical data transmission path. Where FC and FC connectors are generally used in communications transmission equipment, such as Guangzhou Silver News optical End Machine products; St Joints are usually first connected to the fiber optic transceiver or optical fiber module with a coupler.

Commonly used type of pigtail: The
fc-sc type, which is usually the tail fiber of the rotating side of the circle. FC connects the ODF box to the optical port of the SC connection device. Huawei's early SBS and Optix devices are made of this fiber optic connector.
FC-FC type, commonly known as round and round pigtail, usually used in the ODF rack between the jump fiber, but in the early days of Huawei SBS type long-range equipment has also been used, long-distance optical cable is round mouth. (Product recommendation: fc-fc-fiber jumper)
SC-SC type, commonly known as square turn tail fiber, generally used in the equipment between the light plate connection.
SC-LC Type, LC interface is commonly known as small square tail fiber, is the card-connected. Now the Huawei OSN series equipment, ZTE S series equipment, including the early Lucent's wavelength division equipment, are used in this fiber optic connector.
LC-LC Type, this application is relatively small, usually in the wavelength division equipment between the internal fiber. The
main types are so many, are single-mode tail fiber, tail fiber color is yellow. Of course, there are other types of optical interfaces used in data devices, usually multi-mode pigtail, color is orange, transmission of light signal is not long, transmission is not necessary.