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Anna University Question Paper Code :71216
M.E./M.Tech. DECREE EXAMINATION, JUNE/JULY 2013.
First Semester
Communication Systems
CU 9213/CU 913 – OPTICAL COMMUNICATION NETWORKS
(Common to M.E. Digital Electronics and Communication Engineering and M.Tech. Information and Communication Technology)
(Regulation 2009)
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PART A — (10 x 2 20 marks)
1. What are the different loss components in optical fibers?
2. Enumerate the features and applications of Solitons.
3. What is the difference between LAN and WAN?
4. What are the types of WDM? Mention their advantages.
5. Why is minimization of routing updates required in networking?
6. What is the principle of client layers of the optical layer?
7. What are the merits of photonic switching over electronic switching?
8. What is the need for synchronization?
9. What is the concept of Optical Cross connects?
10. What are the basic functions of Link Management Protocol?
PART B — (5 x 16 = 80 mark-s)
11. (a) (i) State and explain Snell's law and its application in optical fibers. (8)
(ii) Explain the characteristics of Solitions in detail. (8)
Or (b) (i) Explain the fabrication of a simple 2 x2 fiber optic coupler with a neat diagram. Derive its coupling length. (8)
(ii) Explain the features and applications of optical amplifiers and optical switches. (8)
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