Optical fiber attenuation is affected by both cable length and light wavelength. What is the correct answer?

The statement regarding optical fiber attenuation being affected by both cable length and light wavelength is accurate. Attenuation refers to the reduction in signal strength as it travels through the fiber optic cable.

When considering cable length, it is important to understand that the longer the fiber optic cable, the more opportunity there is for the signal to degrade due to scattering, absorption, and other factors. This means that as the length increases, the attenuation typically increases as well.

Additionally, light wavelength plays a significant role in the attenuation characteristics of optical fibers. Different wavelengths are affected differently by the materials used in the fiber and by environmental factors. For example, in single-mode fibers, certain wavelengths may travel more efficiently with lower attenuation compared to other wavelengths.

Together, these two factors—cable length and light wavelength—are crucial in determining the overall performance and efficiency of optical communication systems. Therefore, the statement that optical fiber attenuation is affected by both cable length and light wavelength is true.