Which factor can contribute to increased attenuation in a fiber optic link?

All of the factors listed can significantly contribute to increased attenuation in a fiber optic link, making the choice “All of the above” the most comprehensive answer.

Using a lower quality light source can lead to increased attenuation because poorer quality sources may emit light at a wider wavelength range or with lower power. This can result in more scattering and absorption within the fiber, directly impacting the signal strength and clarity over distance.

Excessive bending of the fiber can cause attenuation due to micro-bending or macro-bending losses. When fiber optic cables are bent beyond their recommended radius, the light signals may escape through the bends rather than propagating along the core of the fiber, diminishing the strength of the signal received at the other end.

Utilizing longer fiber lengths without amplification can also lead to increased attenuation. As the distance the light must travel increases, the cumulative losses from scattering, absorption, and other factors become more pronounced. In longer fiber runs, without the necessary amplification to counteract these losses, the signal may fall below acceptable levels by the time it reaches the end destination.

Taken together, these three factors can severely impact the overall performance of a fiber optic link, making it important to consider all of them when assessing and designing fiber optic systems.