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← ScienceWhich outcome occurs within a waveguide bent too sharply?
A)Increased evanescent wave coupling loss✓
B)Reduced material dielectric constant
C)Higher order mode constructive interference
D)Decreased signal group velocity dispersion
💡 Explanation
Increased evanescent wave coupling loss occurs, because the sharp bend causes a portion of the wave to tunnel through the waveguide wall via evanescent coupling. Therefore, energy escapes, rather than propagating as intended in straight waveguides.
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