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← ScienceWhich mechanism limits maximum data propagation speed in optical fiber communication systems?
A)Chromatic dispersion from wavelength variation✓
B)Electromagnetic interference from adjacent fibers
C)Signal attenuation causes photon absorption
D)Polarization mode dispersion causes birefringence
💡 Explanation
When light pulses propagate in optical fibers, chromatic dispersion occurs because different wavelengths travel at slightly different speeds, broadening the pulses and limiting data rate. Therefore, wavelength variation is the limitation of the propagation speed, rather than EMI, signal attenuation, or polarization which result from loss mechanisms.
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