Explore topic-wise MCQs in Optical Communication.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communication knowledge and support exam preparation. Choose a topic below to get started.

1.

Skew rays follow a ___________

A. Hyperbolic path along the axis
B. Parabolic path along the axis
C. Helical path
D. Path where rays changes angles at core-cladding interface
Answer» D. Path where rays changes angles at core-cladding interface
Discussion
2.

Meridional rays in graded index fibers follow ____________

A. Straight path along the axis
B. Curved path along the axis
C. Path where rays changes angles at core-cladding interface
D. Helical path
Answer» C. Path where rays changes angles at core-cladding interface
Discussion
3.

Most of the optical power is carried out in core region than in cladding.

A. True
B. False
Answer» B. False
Discussion
4.

For lower bandwidth applications ______________

A. Single mode fiber is advantageous
B. Photonic crystal fibers are advantageous
C. Coaxial cables are advantageous
D. Multimode fiber is advantageous
Answer» E.
Discussion
5.

A single-mode step-index fiber or multimode step-index fiber allows propagation of only one transverse electromagnetic wave.

A. True
B. False
Answer» B. False
Discussion
6.

A step-index fiber has core refractive index 1.46 and radius 4.5μm. Find the cutoff wavelength to exhibit single mode operation. Use relative index difference as 0.25%.

A. 1.326μm
B. 0.124μm
C. 1.214μm
D. 0.123μm
Answer» D. 0.123μm
Discussion
7.

A graded-index fiber has a core with parabolic refractive index profile of diameter of 30μm, NA=0.2, λ=1μm. Estimate the normalised frequency.

A. 19.32
B. 18.84
C. 16.28
D. 17.12
Answer» C. 16.28
Discussion
8.

WHAT_IS_THE_UNIT_OF_NORMALIZED_FREQUENCY??$

A. Hertz
B. Meter/sec
C. Coulombs
D. It is a dimensionless quantity
Answer» E.
Discussion
9.

Skew_rays_follow_a$

A. Hyperbolic path along the axis
B. Parabolic path along the axis
C. Helical path
D. Path where rays changes angles at core-cladding interface
Answer» D. Path where rays changes angles at core-cladding interface
Discussion
10.

Meridional rays in graded index fibers follo?

A. Straight path along the axis
B. Curved path along the axis
C. Path where rays changes angles at core-cladding interface
D. Helical path
Answer» C. Path where rays changes angles at core-cladding interface
Discussion
11.

Most of the optical power is carried out in core region than in cladding. State true or false:

A. True
B. False
Answer» B. False
Discussion
12.

For lower bandwidth applications,

A. Single mode fiber is advantageous
B. Photonic crystal fibers are advantageous
C. Coaxial cables are advantageous
D. Multimode fiber is advantageous
Answer» E.
Discussion
13.

One of the given statements is true for intermodal dispersion. Choose the right one.

A. Low in single mode and considerable in multimode fiber
B. Low in both single mode and multimode fiber
C. High in both single mode and multimode fiber
D. High in single mode and low in multimode fiber
Answer» B. Low in both single mode and multimode fiber
Discussion
14.

A step-index fiber has core refractive index 1.46 and radius 4.5μm. Find the cutoff wavelength to exhibit single mode operation. Use relative index difference as 0.25%.$

A. 1.326μm
B. 0.124μm
C. 1.214μm
D. 0.123μm
Answer» D. 0.123‚âà√≠¬¨‚à´m
Discussion
15.

A graded-index fiber has a core with parabolic refractive index profile of diameter of 30μm, NA=0.2, λ=1μm. Estimate the normalised frequency.$

A. 19.32
B. 18.84
C. 16.28
D. 17.12
Answer» C. 16.28
Discussion
16.

A multimode step index fiber has a normalized frequency of 72. Estimate the number of guided modes.

A. 2846
B. 2592
C. 2432
D. 2136
Answer» C. 2432
Discussion