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Which data loss risk increases through multi-mode fibers?

A)Polarization mode dispersion broadens pulse
B)Fresnel reflection generates backscattering
C)Raleigh scattering attenuates blue wavelengths
D)Chromatic dispersion varies group velocities

💡 Explanation

Mode dispersion risks high bit-error rates, because differential group delay leads to pulse broadening via polarization mode dispersion. Therefore, bit errors result, via polarized component shifting, rather than loss only to Rayleigh or fresnel effects.

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