Explore topic-wise MCQs in Optical Communications.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communications knowledge and support exam preparation. Choose a topic below to get started.

1.

The techniques used to determine the refractive index profile can also be used to determine the core diameter.

A. True
B. False
Answer» B. False
Discussion
2.

The shadow velocity is given by 0.4 m s-1 and shadow pulse of width 300 s is registered at an instant by the photodetector. Determine the outer diameter of the optical fiber in m.

A. 100 m
B. 120 m
C. 140 m
D. 90 m
Answer» C. 140 m
Discussion
3.

The shadow method is used for measurement of the outer diameter of an optical fiber. The apparatus employs a rotating mirror with an angular velocity of 4 rad/s which is located at 10 cm from the photo detector. Compute the shadow velocity.

A. 0.1 m s<sup>-1</sup>
B. 0.4 m s<sup>-1</sup>
C. 0.87 m s<sup>-1</sup>
D. 1 m s<sup>-1</sup>
Answer» C. 0.87 m s<sup>-1</sup>
Discussion
4.

The calculations of the numerical aperture from a refractive index data are less accurate for the graded index fibers than for step index fibers.

A. False
B. True
Answer» C.
Discussion