Which condition would cause signal fading in intercontinental submarine fiber optic cables?

A)Increased seawater impurity content

B)Nonlinear polarisation mode dispersion✓

C)Thermally induced Brillouin scattering

D)Increased cable core refractive index

💡 Explanation

Signal fading occurs because birefringence in the fiber causes polarisation mode dispersion; it's nonlinear because higher intensities create Kerr effect; this varies arrival times. Therefore dispersion causes frequency selective fading, rather than absorption from impurities or scattering.

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Which condition would cause signal fading in intercontinental submarine fiber optic cables?

💡 Explanation

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