Which instability results when reflections within an optical fiber constructively interfere?

💡 Explanation

Stimulated Brillouin scattering experiences amplification because backward-propagating photons from reflections undergo constructive interference, which increases acoustic phonon density in the fiber; therefore, SBS becomes pronounced, rather than bandwidth or thermal effects, increasing threshold limits.

• Which outcome occurs when a transmission line's inductive reactance substantially exceeds capacitive reactance?
• Which risk increases when entangled photons decohere within a quantum key distribution (QKD) system?
• Which risk increases significantly when rapidly switching a MOSFET gate capacitance?
• Which outcome reduces heat-engine efficiency when saturated steam cools?
• Which mechanism causes the decrease in back EMF generated when a transformer core reaches saturation?
• Which outcome impairs transistor switching in semiconductors when thermal load changes band structure?