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Optical passive devices are an important part of optical fiber communications equipment. It is an optical component, and its process principle obeys the basic laws of optics, light theory and electromagnetic wave theory, various technical indicators, various calculation formulae and various test methods, and is closely related to fiber optics and integrated optics; therefore, it is related to electricity. There are essential differences between passive devices. In fiber optic cable, it plays a role in connection, distribution, isolation, filtering, and so on. In fact, there are many kinds of optical passive devices. Due to space limitations, only the commonly used optical splitters, optical attenuators, optical isolators, connectors, jumpers, and optical switches are described here.
optical fiber connectors:
Optical fiber connectors, commonly known as connectors, are proposed by the International Telecommunication Union (ITU) as "passive components that are used to stabilize, but not permanently, connect two or more optical fibers" (CCITT Group VI, 1992). Passed in Geneva in March of. It is used for the detachable (active) connection between the optical fiber and the optical fiber. It precisely butt-joins the two ends of the optical fiber so that the optical energy output from the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent possible. Minimize the impact on the system due to its involvement in the optical link. An optical fiber active connector is a passive optical device that realizes active connection between optical fibers. It also has the function of connecting optical fibers with active devices, optical fibers and other passive devices, optical fibers, and systems and meters. The active connector has developed along with the development of optical communication, and now has formed a complete range of system products of various types, and is one of the indispensable and widely used basic components in the field of optical fiber applications.
Although optical fiber (cable) moving connectors vary widely in structure and variety, they can be divided into the following parts according to their functions: connector plugs, fiber jumpers, converters, converters, and the like. These components can be used individually as a device or they can be used together as a component. In fact, an active connector customarily refers to two connector plugs plus one converter.