Which effect reduces signal quality when transmitting light through a 5km length of conventional single-mode fiber?

💡 Explanation

Modal dispersion limits data rates in single-mode fiber, because slight imperfections cause different propagation modes, and therefore the pulse broadens; stimulated emission would amplify the signal strength, rather than decrease quality as in pulse broadening.

• Which outcome results when an electromagnetic wave's frequency matches a molecule's vibrational mode within a material?
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