A fiber optic attenuator is a device used to reduce the power of optical signals in fiber optic transmission, and its working principle is based on the absorption and scattering of optical signals by optical fibers.
Usually the loss of optical fiber is used to achieve the reduction of optical signal power. The loss of an optical fiber refers to the amount of light attenuation due to absorption, scattering, bending and other reasons when light is transmitted in an optical fiber. Fiber optic attenuator by adding a certain length of high absorbance additional material in the optical fiber, so that the optical signal loss occurs when passing through this additional material, so as to achieve the purpose of reducing the optical signal power.
There are two common types, namely fixed attenuators and adjustable attenuators. Fixed attenuators usually use a predetermined fixed amount of attenuation, while adjustable attenuators allow the user to adjust the amount of attenuation as needed.
In general, fiber optic attenuators reduce the power of an optical signal by adding a highly absorbent additional material to the fiber, allowing the signal to be transmitted steadily through the fiber.
