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← ScienceWhich outcome occurs when resonant frequencies align within photonic crystal band gaps?
A)Light becomes highly localized✓
B)Refractive index becomes uniform
C)Energy band gap collapses
D)Crystal lattice becomes amorphous
💡 Explanation
Light becomes localized because the photonic crystal’s band gap inhibits propagation at those frequencies; this triggers the mechanism of Anderson Localization. Therefore, light concentrates rather than propagating, and the refractive index remains non-uniform.
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