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In optical fibre the attenuation happens mainly due to:

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In optical fibre the attenuation happens mainly due to:
1. Absorption
2. Scattering
3. Interference
4. Both a and b
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Correct Answer - Option 4 : Both a and b

CONCEPT:

Attenuation:

  • Attenuation in optical fibre is the reduction in the intensity of the light beam (or signal) with respect to distance travelled through a transmission medium.
  • Empirical research has shown that attenuation in optical fibre is caused primarily by both scattering and absorption.

EXPLANATION:

  • Empirical research has shown that attenuation in optical fibre is caused primarily by both scattering and absorption.
  • Hence, option 4 is correct.
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