Which optical phenomenon causes signal degradation in multi-mode fiber optics?

💡 Explanation

Modal dispersion occurs because different light modes take varying paths, therefore arriving at different times, rather than simultaneously. This leads to pulse broadening and signal degradation, rather than reflections or scattering that might cause signal loss.

• Which instability arises when a proportional valve's spool displacement significantly lags driver command in a hydraulic servo system?
• Which risk increases when a three-phase circuit breaker fails to fully open one phase during a fault condition?
• Which outcome occurs when de-icing fluid excessively accumulates on an aircraft's control surfaces during pre-flight procedures?
• Which consequence results when excessive hydraulic damping in aircraft landing gear occurs?
• Which efficiency loss occurs in high-power LEDs due to increased non-radiative recombination?
• Which outcome occurs when accumulated charge neutralizes at a p-n junction?