Explore topic-wise MCQs in Optical Communications.

This section includes 6 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.

In waveguide dispersion, refractive index is independent of ______________

A. Bit rate
B. Index difference
C. Velocity of medium
D. Wavelength
Answer» E.
2.

The optical source used in a fiber is an injection laser with a relative spectral width / of 0.0011 at a wavelength of 0.70 m. Estimate the RMS spectral width.

A. 1.2 nm
B. 1.3 nm
C. 0.77 nm
D. 0.98 nm
Answer» D. 0.98 nm
3.

What is pulse dispersion per unit length if for a graded index fiber, 0.1 s pulse broadening is seen over a distance of 13 km?

A. 6.12ns/km
B. 7.69ns/km
C. 10.29ns/km
D. 8.23ns/km
Answer» C. 10.29ns/km
4.

A multimode graded index fiber exhibits a total pulse broadening of 0.15 sover a distance of 16 km. Estimate the maximum possible bandwidth, assuming no intersymbol interference.

A. 4.6 MHz
B. 3.9 MHz
C. 3.3 MHz
D. 4.2 MHz
Answer» D. 4.2 MHz
5.

The maximum bit rate that may be obtained on an optical fiber link is 1/3 .

A. True
B. False
Answer» C.
6.

For no overlapping of light pulses down on an optical fiber link, the digital bit rate BT must be ___________

A. Less than the reciprocal of broadened pulse duration
B. More than the reciprocal of broadened pulse duration
C. Same as that of than the reciprocal of broadened pulse duration
D. Negligible
Answer» B. More than the reciprocal of broadened pulse duration