Which limitation causes increased signal attenuation in long-distance fiber optic cables?

💡 Explanation

Increased signal attenuation occurs due to Raman scattering, a nonlinear optical effect, weakening the signal over long distances because photons lose energy, therefore increasing the need for optical amplification rather than improved fiber construction techniques.

• Which outcome is likely if an incorrectly sized shunt trip breaker is installed in a three-phase motor circuit?
• Which outcome occurs when heat exchanger fins in HVAC system become fouled with dust?
• Which outcome occurs when multi-path delay spread exceeds guard interval limits?
• Which risk increases when an undersized accumulator feeds a hydraulic actuator?
• Which consequence results when a quadrature encoder's A/B phase relationship drifts within a CNC milling machine servo loop?
• Which risk increases when transient overvoltages affect aircraft electrical circuits?