Explore topic-wise MCQs in Optical Communications Questions and Answers.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communications Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Determine the impedance of a coaxial cable system operating at temperature 17 degree Celsius at output voltage of 5V, 0.85μmwavelength, optical power of 1mW, 70% quantum efficiency and SNR ratio of 1.04 * 104.

A. 80Ω
B. 50Ω
C. 90Ω
D. 100Ω
Answer» E.
Discussion
2.

Determine the wavelength of a coaxial cable system operating at temperature 17 degree Celsius at output voltage of 5V, 100Ω impedance, optical power of 1mW, 70% quantum efficiency.

A. 0.39μm
B. 0.60μm
C. 0.85μm
D. 0.98μm
Answer» D. 0.98μm
Discussion
3.

Determine the efficiency of a coaxial cable system at 17 degree Celsius with peak output voltage 5V, 0.85 μm wavelength and SNR ratio of 1.04 * 104.

A. 80%
B. 70%
C. 40%
D. 60%
Answer» C. 40%
Discussion
4.

Determine the peak output voltage if efficiency is 70%, wavelength is 0.85μm and output power is 1mW.

A. 7V
B. 8V
C. 5V
D. 6V
Answer» C. 5V
Discussion
5.

Determine ratio of SNR of coaxial system to SNR of fiber system if peak output voltage is 5V, quantum efficiency of 70%, optical power is 1mW, wavelength of 0.85μm.

A. 1.04 * 104
B. 2.04 * 104
C. 3.04 * 104
D. 4.04 * 104
Answer» B. 2.04 * 104
Discussion
6.

Determine dispersion equalization penalty without mode coupling if BT is 150 Mbits/s and total rms pulse broadening is 4.8ns.

A. 34 dB
B. 33 dB
C. 76.12 dB
D. 34.38 dB
Answer» E.
Discussion
7.

Determine dispersion equalization penalty with mode coupling of 1.7ns if BT is 25 Mbits/s.

A. 4.8 * 104dB
B. 4 * 104dB
C. 4.2 * 104dB
D. 3.8 * 104dB
Answer» D. 3.8 * 104dB
Discussion
8.

Determine dispersion equalization penalty if total RMS pulse broadening is 4.8ns, BT is 25 Mbits/s.

A. 0.03 dB
B. 0.08 dB
C. 7 dB
D. 0.01 dB
Answer» B. 0.08 dB
Discussion