Question Paper: Optical Communication & Networks Question Paper - December 2016 - Electronics and Telecom Engineering (Semester 7) - Mumbai University (MU)
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Optical Communication & Networks - December 2016

MU Electronics and Telecom Engineering (Semester 7)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question No. 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary

Solve any four questionQ.1(a,b,c,d,e)

1(a) Compare intermodal and intramodal dispersion.
5 marks 944

1(b) Explain the basic working principle of Lasers.
5 marks 951

1(c) Differentiate between the optical components isolator and circulator.
5 marks 972

1(d) Explain the concept of Bragg Grating.
5 marks

1(e) Define crosstalk. What are the types of crosstalk in optical transmission system?
5 marks

2(a) Derive the expression for pulse spreading in intermodal dispersion.
5 marks 944

2(b) Draw architecture of SONET/SDH and explain in brief.
5 marks 970

3(a) Explain Material attenuation in optical fiber communication.
5 marks

3(b) What do you mean by bit interleaving and packet interleaving?
5 marks 978

3(c) Derive the expression of Power Penalty with impariment and without impairment.
5 marks

4(a) Explain SPM and how it is mitigated by GVD.
5 marks

4(b) Explain four waves mixing.
5 marks

4(c) Cornment on need of Wavelength stabilization.
5 marks

5(a) Explain important network management functions to the operation of the Network.
5 marks 984

5(b) What is micro bending loss? Explain how to minimize the these losses with neat sketch.
5 marks 947

5(c) How DWDM is different from WDM?
5 marks 970

6 Write a short notes on:-
i) Link Budget 962

ii) Dispersion and OTDR 942 948


iii) Optical Access Network
975 iv) WDM network element and architecture 973 5 marks

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