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← ScienceWhich outcome occurs when injecting a high-power laser beam into a normally transparent silica fiber optic cable?
A)Stimulated Brillouin scattering initiates backscattering✓
B)Fiber Bragg grating wavelength shifts linearly
C)Chromatic dispersion narrows output pulses
D)Self-phase modulation broadens pulse spectrum
💡 Explanation
Stimulated Brillouin scattering causes significant backscattering because the high optical intensity initiates acoustic phonons, therefore producing a reflected wave interfering with the forward beam, rather than simple absorption.
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