Which optical effect limits channel capacity increases in dense wavelength division multiplexing?

💡 Explanation

Four-wave mixing generates new frequencies from interactions of multiple signals’ wavelengths because high optical power causes fiber non-linearity, therefore it adds unwanted signals that interfere, rather than chromatic dispersion which causes pulse broadening.

• Which risk increases when refrigerant flow bottlenecks within the evaporator of a cryogenic cooling system?
• Which outcome occurs when a steel I-beam supporting a bridge experiences cyclic loading near its fatigue limit?
• Which outcome occurs when multi-path delay spread exceeds guard interval limits?
• Which outcome occurs affecting flight stability when ice accumulates foremost wing edges?
• Which outcome occurs during robotic arm movement planned using inverse kinematics when the joint angle solution is imaginary?
• Which risk increases when a molded-case circuit breaker is applied in a three-phase system with high harmonic distortion?