Optical fiber jumper (also called optical fiber connector) means that both ends of the optical cable are equipped with connector plugs to realize the active connection of the optical path; one end with a plug is called a pigtail. Fiber optic jumpers are similar to coaxial cables, except that there is no mesh shield. In the center is the glass core through which light propagates. It is mainly used to realize the non-permanent fixed connection between equipment room, equipment and instrument room, equipment and optical fiber, and optical fiber and optical fiber in the system. It is an indispensable passive component in optical fiber communication system.
At the current rapid development of Internet information, optical fiber has been widely used due to its high speed and fast speed. As an important device used to realize the active connection of optical paths, optical fiber jumpers have always been used in data centers, fiber to the home, local area networks and other production centers. Important guests, since the common use of fiber optic patch cords, most people still have many questions and problems about the basic knowledge of fiber optic patch cords. Next, we will have an in-depth understanding of the structure, classification, characteristics, and applications of fiber optic patch cords.
The structure of optical fiber jumper
In a multimode fiber, the diameter of the core is 50μm~65μm, roughly equivalent to the thickness of a human hair. The single-mode fiber core has a diameter of 8 μm to 10 μm. The core is surrounded by a glass envelope with a lower refractive index than the core to keep the optical fiber in the core. On the outside is a thin plastic jacket to protect the envelope.
Classification of fiber optic patch cords
Optical fiber patch cords can be divided into common "single-mode fiber patch cords" and "multi-mode fiber patch cords" according to different transmission media.
Single-mode fiber (Single-mode Fiber): Generally, fiber jumpers are indicated by yellow, and the connectors and protective sleeves are blue; the transmission distance is longer.
Multi-mode fiber (Multi-mode Fiber): Generally, fiber jumpers are represented in orange, and some are represented in gray. The connectors and protective covers are in beige or black; the transmission distance is short.
According to the different structure of the connector, it can be divided into: FC fiber jumper, SC fiber jumper, ST fiber jumper, LC fiber jumper, MTRJ fiber jumper, MPO fiber jumper, MU fiber jumper, SMA fiber jumper, Various forms such as FDDI fiber jumper, E2000 fiber jumper, DIN4 fiber jumper, D4 fiber jumper. The more common fiber optic jumpers can also be divided into FC-FC, FC-SC, FC-LC, FC-ST, SC-SC, SC-ST, etc...
① FC type optical fiber jumper: The external strengthening method is a metal sleeve, and the fastening method is a turnbuckle. Generally used on the ODF side (most used on the distribution frame)
②SC type optical fiber jumper: the connector that connects to the GBIC optical module, its shell is rectangular, and the fastening method is a plug-in latch type without rotation. (Most used on router switches)
③ST type optical fiber jumper: commonly used in optical fiber distribution frame, the shell is round, and the fastening method is turnbuckle. (For 10Base-F connection, the connector is usually ST type. Commonly used in optical fiber distribution frame)
④LC-type optical fiber jumper: the connector for connecting the SFP module, which is made of a convenient modular jack (RJ) latch mechanism. (Routers are commonly used)
