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Which 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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