Fiber Optic Components

Passive fiber optic components are an important part of fiber optic communication systems. Classified by function, there are fiber optic connectors, fiber optical adapters, optical attenuators, optical isolators, and optical circulators.

Optical fiber communication systems are developing towards access networks, broadband networks, dense wavelength division multiplexing systems, and all-optical networks, placing new and higher requirements on the technology of fiber optic passive devices.

Therefore, how to grasp the technical development direction of optical passive components to meet the needs of the market has become a concern of the industry.UnitekFiber provides fiber optical components. Our components are including fiber optic connectors, fiber optic adapters, attenuators etc..With reliable quality control system for connectors ceramic ferrules and ceramic sleeve warranting stable performance at fiber optical network construction.

Classification and application of fiber optic passive components

There are many types of optical fiber passive devices, and the structure is varied. Generally, they are classified according to the functions of the devices.

Fiber optic (cable) connector has a connection function in a fiber optic communication line. In addition to the fixed termination between the optical cables, most of them are single-core or dual-core connectors, which are used for connecting the optical cable to the optical distribution frame (ODF), and connecting the optical distribution frame to the optical transceiver.Optical fiber connectors can be classified into common single-mode and multi-mode connectors of silicon-based fibers according to different transmission media, and other fiber-optic connectors such as plastics. According to the connection structure, it can be divided into FC, SC, ST, LC, D4, DIN, MU, MT and so on. Among them, ST connectors are usually used for wiring equipment terminals, such as fiber distribution frames, fiber modules, and so on. The SC and MT connectors are typically used on the network device side. PC, UPC and APC are divided according to the shape of the end face of the fiber. There are also single-core and multi-core (such as MT-RJ) according to the number of cores. Fiber optic connectors are used in a wide variety of applications. In the actual application process, we generally distinguish according to the structure of the fiber optic connector.

In a fiber-optic communication system, in order to achieve flexible connection between different devices and systems. It is necessary to have a component capable of connecting between optical fiber and optical fiber, so that the optical signal can be transmitted according to the required channel. The component to achieve this function is called fiber optic adapter. Optical fiber adapters can be divided into common single-mode and multi-mode adapters according to different transmission media; according to the connection structure, they can be divided into FC, SC, ST, LC, MTRJ, DIN, MU, MT, etc.; The shape of the end face of the fiber is divided into FC, PC (including SPC or UPC) and APC type; there are also single-core (single-core) and duplex (double-core) fiber adapters according to the number of cores.

The optical attenuator is configured to attenuate the optical power by a predetermined amount according to the requirements of the users. The function of the attenuator is to make the optical receiver not produce saturation distortion, or to meet certain tests in the optical line (such as the sensitivity test of the system), and to balance the power of the multiplexed branch optical power. There are two types of attenuators: variable fiber otpic attenuator and fixed optical attenuator.