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← TechnologyWhich outcome occurs when insufficient guard bands exist in wavelength division multiplexing (WDM) optical fiber?
A)Increased inter-channel crosstalk✓
B)Reduced fiber refractive index
C)Elevated signal-to-noise ratio
D)Decreased laser power consumption
💡 Explanation
Increased inter-channel crosstalk will occur because insufficient guard bands lead to spectral overlap between adjacent channels. This is due to interferences, rather than intended signal transmissions; therefore, data integrity decreases rather than improves.
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