Are you searching Kannur University B.tech Electronics and Communications Engineering Question Papers? Here You can find Optical Communication Question Paper.
VIII Semester B.Tech. - Including Part Time Degree (Reg./Sup./lmp.)
Examination, April 2012
(2007 Admn. Onwards)
PT 2K6/2K6 EC 802 : OPTICAL COMMUNICATION
Time: 3 Hours Max" Marks : 100
l. 1) Explain with block diagram fiber optic communication system. [Marks 5]
2) Explain the fiber classification based on refractive index. [Marks 5]
3) Explain the working principle of LED. [Marks 5]
4) Define quantum efficiency and response time. [Marks 5]
5) Explain the effect of noise in coherent systems. [Marks 5]
6) Write a note on ISI. [Marks 5]
7) Explain the working principle of rare earth doped fiber amplifier. [Marks 5]
8) Write a note on amplifier noise. [Marks 5]
ll. A) Derive the solution tor Maxwells equation in circularly symmetric step in
index fiber. [Marks 15]
OR
B) Bring out the differences between dispersion shifted, dispersion flattened
and polarization maintaining fibers. [Marks 15]
III. A) Give the LASER structure. Explain how it is able to generate the light with
the required plots. [Marks 15]
OR
B) Explain the working of PIN and Avalanche photo diode. [Marks 15]
IV. A) i) Bring out the differences between Homo dyne and Hetero dyne system.
ii) Write a note on multichannel coherent system. [Marks 15]
OR
B) Explain the causes of performance degradation when light signal propagate in optical fiber. [Marks 15]
V. A) compare the performance of various optical networks. [Marks 15]
OR
B) Explain how the light can be amplified in semiconductor and Raman amplifiers. [Marks 15]
VIII Semester B.Tech. - Including Part Time Degree (Reg./Sup./lmp.)
Examination, April 2012
(2007 Admn. Onwards)
PT 2K6/2K6 EC 802 : OPTICAL COMMUNICATION
Time: 3 Hours Max" Marks : 100
l. 1) Explain with block diagram fiber optic communication system. [Marks 5]
2) Explain the fiber classification based on refractive index. [Marks 5]
3) Explain the working principle of LED. [Marks 5]
4) Define quantum efficiency and response time. [Marks 5]
5) Explain the effect of noise in coherent systems. [Marks 5]
6) Write a note on ISI. [Marks 5]
7) Explain the working principle of rare earth doped fiber amplifier. [Marks 5]
8) Write a note on amplifier noise. [Marks 5]
ll. A) Derive the solution tor Maxwells equation in circularly symmetric step in
index fiber. [Marks 15]
OR
B) Bring out the differences between dispersion shifted, dispersion flattened
and polarization maintaining fibers. [Marks 15]
III. A) Give the LASER structure. Explain how it is able to generate the light with
the required plots. [Marks 15]
OR
B) Explain the working of PIN and Avalanche photo diode. [Marks 15]
IV. A) i) Bring out the differences between Homo dyne and Hetero dyne system.
ii) Write a note on multichannel coherent system. [Marks 15]
OR
B) Explain the causes of performance degradation when light signal propagate in optical fiber. [Marks 15]
V. A) compare the performance of various optical networks. [Marks 15]
OR
B) Explain how the light can be amplified in semiconductor and Raman amplifiers. [Marks 15]
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