Optical Communication MCQ Questions & Answers | ECE

A. 10 dB/km

B. 1 dB/km

C. 20 dB/km

D. 100 dB/km

A. fibre hubs

B. media converters

C. patch panel

D. rewiring

A. 1 only

B. 2 only

C. 3 only

D. 1, 2 and 3

A. Step index

B. Graded index

C. Step and graded index

D. Coaxial cable

A. 125-140 µm

B. 8-50 µm

C. 8-12 µm

D. 50-200 µm

A. It is used to determine the refractive index profile of optical fiber

B. It does not require Interference fringe pattern to measure refractive index

C. It is used for surface topography measurement

D. Instruments do not physically contact the surface under test

A. $${n_2} > {n_1}{\text{ and }}{\phi _1} > {\cos ^{ - 1}}\left( {\frac{{{n_2}}}{{{n_1}}}} \right)$$

B. $${n_2} < {n_1}{\text{ and }}{\phi _1} > {\cos ^{ - 1}}\left( {\frac{{{n_2}}}{{{n_1}}}} \right)$$

C. $${n_1} < {n_2}{\text{ and }}{\phi _1} < {\cos ^{ - 1}}\left( {\frac{{{n_2}}}{{{n_1}}}} \right)$$

D. $${n_1} > {n_2}{\text{ and }}{\phi _1} > {\cos ^{ - 1}}\left( {\frac{{{n_2}}}{{{n_1}}}} \right)$$

A. Difference in transmission phase of peak pulse & leading or trailing edges of pulse

B. Third-order optical non-linearity

C. Intensity dependence of refractive index

D. Change in wavelength

A. 850 nm

B. 1300 nm

C. 1480 nm

D. 1550 nm

A. 37°

B. 41°

C. 45°

D. 60°