Question

the ratio of the input optical power to the output optical power over length L of an optical fibre is known as
1. Bandwidth
2.geomaterical defect
3. Attenuation
4. dispersion​
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Answer 1

ANSWER:

The correct answer is:

ATTENUATION

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Answer 2

Attenuation is the ratio of input optical power to output optical power over the length L of an optical fiber.

• Attenuation is the reduction in signal strength as it travels through the optical fiber.
• It can also be explained as the loss in the power of the light as it pulses through the fiber.
• It is caused due to either absorption or scattering that occurs within the fiber.
• Imperfection in the structure of the fiber causes absorption.
• The absorption rate depends on the wavelength of the light.
• Scattering occurs due to particles present within the fiber.
• Almost 90% of attenuation is due to Rayleigh scattering.
• Therefore we can say, attenuation depends on the material of the optical fiber.