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← ScienceWhich risk increases to an optical modulator when exceeding its maximum optical input power from a CW laser?
A)Increased thermo-optic phase fluctuations
B)Stimulated Brillouin scattering (SBS) arises✓
C)Reduced overall second-order nonlinearity
D)Enhanced four-wave mixing efficiency
💡 Explanation
Stimulated Brillouin scattering (SBS) becomes prominent because excessive optical power intensifies the interaction between photons and acoustic phonons within the modulator material, therefore inducing backscatter, rather than phase fluctuations driven by gradual heating.
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