Which signal degradation increases in optical fiber when exceeding the critical radius?

💡 Explanation

When the fiber radius exceeds the critical value, core confinement diminishes; therefore, increased path differences exacerbate modal dispersion because different modes travel at varying speeds rather than remaining tightly grouped, leading to pulse broadening.

• Which operational risk increases when a positive displacement refrigerant pump experiences a significant liquid floodback?
• Which outcome directly results when halogenated refrigerant degrades via photolysis in the stratosphere?
• Which risk increases when a hydraulic actuator regulating turbine blade pitch experiences excessively rapid cycling?
• Which outcome occurs from oil accumulation on the evaporator coil during heat pump operation?
• Which issue arises when rapid, successive short circuit faults occur near a power transformer, overwhelming protection breakers?
• Which signal degradation increases when cladding defects create Rayleigh scattering in fiber optics?