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2003 Course Advanced Communication Systems (Elective II)

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Total No. of Questions : 12] P992 [Total No. of Pages : 4 [3664]-206 B.E. (E & TC) 40425: ADVANCED COMMUNICATION SYSTEMS (Elective - II) (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answer 3 questions from Section I and 3 questions from Section II. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) What are the key system features of WDM? List and explain. b) Explain the principal role of Tunable Filter with neat diagram. c) Enlist the basic applications and types of Optical Amplifiers . [6] [5] [5] OR Q2) a) What are the operational principles of WDM? Explain with neat diagram. [6] b) Explain the principal role of Star Coupler with neat diagram. [5] c) Define and explain the Wavelength Converters . [5] Q3) a) What is meant by Broadcast-and-Select WDM networks? Draw the physical architecture of a Broadcast-and-Select Single-Hop Network and explain its detail. [8] b) List important challenges encountered while designing an optical networks? What are the Nonlinear effects on network performance and their possible solutions? [8] OR Q4) a) Why SONET/SDH Rings are commonly called self-healing rings ? Draw and explain the two-fiber unidirectional and bidirectional network configurations. [8] b) Write the applications and notes on Optical Spectrum Analyzer (OSA) . [8] P.T.O.

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