Power reduction is accomplished by methods such as absorption, reflection, diffusion, scattering, reflection, diffraction, and dispersion. Optical attenuators generally work by absorbing light in the same way that sunglasses absorb extra light energy. They generally have an operating wavelength range in which they absorb all light energy equally.
Attenuation and insertion loss: The insertion loss and the attenuation of the fiber optic attenuator are important indicators of the attenuation of the optical attenuator to the actual insertion loss and the added attenuation of the variable attenuator. The insertion loss of a high-quality variable attenuator can be 1.0dB or less. Generally speaking, an ordinary variable attenuator can be used if the index is less than 2.5dB. The insertion loss when actually choosing an adjustable attenuator should be as low as possible.
Attenuation accuracy is an important indicator of optical attenuators. Return loss: an important indicator of the influence of system performance on the return loss of optical equipment parameters.
Now you can understand how fiber optic attenuators work and how important they are to fiber optic infrastructure.
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