Explore topic-wise MCQs in Optical Communication.

This section includes 28 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.

Stimulated Raman scattering may have an optical power threshold of may be three orders of magnitude ___________

A. Lower than Brillouin threshold
B. Higher than Brillouin threshold
C. Same as Brillouin threshold
D. Higher than Rayleigh threshold
Answer» C. Same as Brillouin threshold
Discussion
2.

Stimulated Raman scattering occur in ___________

A. Forward direction
B. Backward direction
C. Upward direction
D. Forward and backward direction
Answer» E.
Discussion
3.

High frequency optical phonon is generated in stimulated Raman scattering.

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

Stimulated Brillouin scattering is mainly a ___________

A. Forward process
B. Backward process
C. Upward process
D. Downward process
Answer» C. Upward process
Discussion
5.

0.4 dB/km, 1.4μm, 6μm, 550MHz. Find threshold optical power for stimulated Raman scattering.

A. 1.98 W
B. 1.20 W
C. 1.18 W
D. 0.96 W
Answer» D. 0.96 W
Discussion
6.

A single-mode optical fiber has an attenuation of 0.3dB/km when operating at wavelength of 1.1μm. The fiber core diameter is 4μm and bandwidth is 500 MHz. Find threshold optical power for stimulated Brillouin scattering.

A. 11.20 mw
B. 12.77 mw
C. 13.08 mw
D. 12.12 mw
Answer» C. 13.08 mw
Discussion
7.

The phonon is a quantum of an elastic wave in a crystal lattice.

A. True
B. False
Answer» B. False
Discussion
8.

Raman and Brillouin scattering are usually observed at ___________

A. Low optical power densities
B. Medium optical power densities
C. High optical power densities
D. Threshold power densities
Answer» D. Threshold power densities
Discussion
9.

The in-homogeneities in Mie scattering can be reduced by coating of a fiber.

A. True
B. False
Answer» B. False
Discussion
10.

Mie scattering has in-homogeneities mainly in ___________

A. Forward direction
B. Backward direction
C. All direction
D. Core-cladding interface
Answer» B. Backward direction
Discussion
11.

The scattering resulting from fiber imperfections like core-cladding RI differences, diameter fluctuations, strains, and bubbles is?

A. Rayleigh scattering
B. Mie scattering
C. Stimulated Brillouin scattering
D. Stimulated Raman scattering
Answer» C. Stimulated Brillouin scattering
Discussion
12.

Rayleigh scattering can be reduced by operating at smallest possible wavelengths.

A. True
B. False
Answer» C.
Discussion
13.

Dominant intrinsic loss mechanism in low absorption window between ultraviolet and infrared absorption tails is ___________

A. Mie scattering
B. Rayleigh scattering
C. Stimulated Raman scattering
D. Stimulated Brillouin scattering
Answer» C. Stimulated Raman scattering
Discussion
14.

Rayleigh scattering and Mie scattering are the types of _____________

A. Linear scattering losses
B. Non-linear scattering losses
C. Fiber bends losses
D. Splicing losses
Answer» B. Non-linear scattering losses
Discussion
15.

A_SINGLE-MODE_OPTICAL_FIBER_HAS_AN_ATTENUATION_OF_0.3DB/KM_WHEN_OPERATING_AT_WAVELENGTH_OF_1.1‚ÂÀ√≠¬¨‚À´M._THE_FIBER_CORE_DIAMETER_IS_4‚ÂÀ√≠¬¨‚À´MAND_BANDWIDTH_IS_500_MHZ._FIND_THRESHOLD_OPTICAL_POWER_FOR_STIMULATED_BRILLOUIN_SCATTERING.?$#

A. 11.20 mw
B. 12.77 mw
C. 13.08 mw
D. 12.12 mw
Answer» C. 13.08 mw
Discussion
16.

Stimulated Brillouin scattering is mainly a$

A. Forward process
B. Backward process
C. Upward process
D. Downward process
Answer» C. Upward process
Discussion
17.

0.4_dB/km,_1.4μm,_6μm,_550MHz._Find_threshold_optical_power_for_stimulated_Raman_scattering.$#

A. 1.98 W
B. 1.20 W
C. 1.18 W
D. 0.96 W
Answer» D. 0.96 W
Discussion
18.

Stimulated Raman scattering may have an optical power threshold of may be three orders of magnitude

A. Lower than Brillouin threshold
B. Higher than Brillouin threshold
C. Same as Brillouin threshold
D. Higher than Rayleigh threshold
Answer» C. Same as Brillouin threshold
Discussion
19.

Stimulated Raman scattering occur in

A. Forward direction
B. Backward direction
C. Upward direction
D. Forward and backward direction
Answer» E.
Discussion
20.

High frequency optical phonon is generated in stimulated Raman scattering. State true or false

A. False
B. True
Answer» C.
Discussion
21.

The phonon is a quantum of an elastic wave in a crystal lattice. State whether the given statement is true or false?

A. True
B. False
Answer» B. False
Discussion
22.

Raman and Brillouin scattering are usually observed at

A. Low optical power densities
B. Medium optical power densities
C. High optical power densities
D. Threshold power densities
Answer» D. Threshold power densities
Discussion
23.

The in-homogeneities in Mie scattering can be reduced by coating of a fiber. State whether the following statement is true or false.

A. True
B. False
Answer» B. False
Discussion
24.

Mie scattering has in-homogeneities mainly in

A. Forward direction
B. Backward direction
C. All direction
D. Core-cladding interface
Answer» B. Backward direction
Discussion
25.

The scattering resulting from fiber imperfections like core-cladding RI differences, diameter fluctuations, strains, and bubbles is

A. Rayleigh scattering
B. Mie scattering
C. Stimulated Brillouin scattering
D. Stimulated Raman scattering
Answer» C. Stimulated Brillouin scattering
Discussion
26.

Rayleigh scattering can be reduced by operating at smallest possible wavelengths. State whether the following statement is true or false.

A. True
B. False
Answer» C.
Discussion
27.

Dominant intrinsic loss mechanism in low absorption window between ultraviolet and infrared absorption tails is

A. Mie scattering
B. Rayleigh scattering
C. Stimulated Raman scattering
D. Stimulated Brillouin scattering
Answer» C. Stimulated Raman scattering
Discussion
28.

Rayleigh scattering and Mie scattering are the types of

A. Linear scattering losses
B. Non-linear scattering losses
C. Fiber bends losses
D. Splicing losses
Answer» B. Non-linear scattering losses
Discussion