Finite specializes in R&D and production of LC, SC, ST, FC and other fiber optic patch cords with different interfaces.
Optical fiber jumpers (also known as optical fiber connectors) refer to the connector plugs installed on both ends of the optical cable to realize the active connection of the optical path; one end with a plug is called a pigtail. Fiber patch cords are similar to coaxial cables, but without the mesh shield. At the center is the glass core where light travels. It is mainly used to realize the non-permanent fixed connection between equipment, equipment and instrument, equipment and optical fiber, and optical fiber and optical fiber in the system. It is an indispensable passive device in optical fiber communication system.
With the rapid development of Internet information, optical fibers have been widely used due to their high speed and high speed. As an important device for realizing optical path active connection, optical fiber jumpers have always been used in data centers, fiber-to-the-home, local area networks and other industries. Important guests, since the popularity of fiber optic patch cords, most people still have many questions and problems about the basic knowledge of fiber optic patch cords.
The structure of fiber jumper
In a multimode fiber, the diameter of the core is 50μm~65μm, which is roughly the thickness of a human hair. The diameter of the single-mode fiber core is 8 μm~10 μm. The core is surrounded by a glass envelope with a lower refractive index than the core to keep the fiber within the core. On the outside is a thin plastic jacket that protects the envelope.
Classification of fiber patch cords
According to the different transmission media, optical fiber patch cords can be divided into common "single-mode optical fiber patch cords" and "multi-mode optical fiber patch cords".
Single-mode fiber (Single-mode Fiber): Generally, the fiber patch cord is represented in yellow, and the connector and protective sleeve are in blue; the transmission distance is long.
Multi-mode Fiber: Generally, fiber patch cords are indicated in orange, and some are indicated in gray, and connectors and protective sleeves are in beige or black; the transmission distance is short.
According to the 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, FDDI fiber jumper, E2000 fiber jumper, DIN4 fiber jumper, D4 fiber jumper and other forms. The more common fiber 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 (the most used on the patch panel)
②SC type optical fiber jumper: the connector for connecting the GBIC optical module, its shell is rectangular, and the fastening method is the plug-and-pull type, which does not need to be rotated. (Most used on router switches)
3. ST-type optical fiber jumper: commonly used in optical fiber distribution frame, the outer shell is round, and the fastening method is turnbuckle. (For 10Base-F connections, the connectors are usually ST type. Often used in fiber optic distribution frames)
④LC-type fiber jumper: a connector for connecting SFP modules, it is made with a modular jack (RJ) latch mechanism that is easy to operate. (commonly used by routers)