In fiber optics, what parameter primarily affects performance in signal loss?

The parameter that primarily affects performance in signal loss for fiber optics is wavelength. In fiber optic communication, the wavelength of the light passing through the fiber directly influences how much signal loss occurs. Different wavelengths experience varying degrees of attenuation as they travel through the fiber. This is due to factors such as material absorption and Rayleigh scattering, which have specific behaviors depending on the wavelength of the light.

For instance, certain wavelengths may coincide with the peak performance of the fiber, resulting in minimal loss, while others may be subject to higher levels of attenuation. This relationship is crucial for designing fiber optic systems, as selecting the appropriate wavelength can optimize performance and maintain signal integrity over long distances.

While jacket material, core diameter, and connector type do influence other aspects of fiber optic performance, such as durability, bandwidth, and connection integrity, the fundamental characteristic that most directly impacts signal loss across the medium is indeed the wavelength.