Graded index fibers Quiz

What is a graded index fiber?

• A type of fiber optic cable with a uniform refractive index

• A type of fiber made from graded levels of synthetic materials

• A type of fiber used for grading student papers

• A type of optical fiber with a gradually decreasing refractive index from the center to the outer surface.

How does a graded index fiber differ from a step index fiber?

• Step index fiber has a core with a refractive index that gradually decreases from the center to the outer edge.

• Graded index fiber has a core with a refractive index that increases from the center to the outer edge.

• Graded index fiber has a core with a refractive index that gradually decreases from the center to the outer edge.

• Graded index fiber has a core with a refractive index that remains constant from the center to the outer edge.

What is the purpose of using graded index fibers in optical communication?

• To reduce modal dispersion and increase bandwidth.

• To reduce signal loss and decrease bandwidth.

• To increase modal dispersion and decrease bandwidth.

• To increase signal loss and increase bandwidth.

Explain the concept of refractive index profile in graded index fibers.

• Variation of refractive index across the core of the fiber

• Refraction index profile only exists in single mode fibers

• Constant refractive index across the core of the fiber

• No variation of refractive index in the fiber

What are the advantages of using graded index fibers over step index fibers?

• Lower modal dispersion and higher bandwidth

• No difference in modal dispersion and bandwidth

• Higher modal dispersion and lower bandwidth

• Step index fibers are more flexible and durable