The function and type analysis of fiber optic attenuator, fiber optic attenuator is an optical device that can reduce the energy of optical signal. It is used to attenuate the input optical power, avoiding the distortion of the optical receiver due to the super strong input optical power. Optical fiber attenuator, as an optical passive device, is used for debugging optical power performance in optical communication systems, debugging calibration and calibration of optical fiber instruments, and optical fiber signal attenuation. The product is made of attenuating optical fiber doped with metal ions, which can adjust the optical power to the required level.
Why Use Fiber Optic Attenuators
The intensity of optical signals received by various optical receiving devices is limited and needs to be within a certain range. If the optical power is too weak or too strong, the device cannot work normally.
When the optical power is too strong, the optical attenuation will be used to adjust the optical power and reduce it to the allowable range. Otherwise, even if the device can be used, it will be detrimental to its life. Therefore, the role of fiber optic attenuators is still very large.
Optical fiber attenuators are divided into the following four categories according to different interfaces
SC fiber optic attenuator: applied to SC fiber optic interface, similar to RJ-45 interface, but the SC interface is flatter, and the contact piece inside is a copper column;
LC optical fiber attenuator: applied to LC optical fiber interface, can be used to connect SFP module, adopts modular jack (RJ) latch mechanism, easy to operate, often used in routers;
FC optical fiber attenuator: applied to FC optical fiber interface, the jacket is wrapped with a metal sleeve, and the fastening method is a turnbuckle. Generally used on the ODF side, mostly used for distribution frames;
ST fiber optic attenuator: Applied to ST fiber optic interface, often used in fiber optic distribution frame, the shell is round, fastened with a turnbuckle, often used in fiber optic distribution frame.
The use of fiber attenuator
The optical fiber attenuator test system has the characteristics of high attenuation accuracy, low additional loss and good stability. Mainly used in: optical fiber communication system; optical fiber CATV; high-power optical device measurement; used to attenuate the input optical power, avoiding the distortion of the optical receiver due to the super strong input optical power.
