In long-distance undersea fiber optic cables incorporating Erbium-Doped Fiber Amplifiers (EDFAs), which consequence arises when amplified signal power surpasses a threshold?

💡 Explanation

Increased power results in increased **Kerr effect**, a non-linear phenomenon. Because the refractive index becomes intensity-dependent, spectral components mix and broaden the signal; therefore, distortion increases, rather than attenuation improving, which happens at lower, controlled power settings.

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