Jaypee Institute of Information Technology (JIIT) 2007 M.Tech Electronics and Communication Engineering test 3: adv-sattelite & fiber optic-comm - Question Paper
JAYPEE UNIVERSITY OF INFORMATION TECHNOLOGY
WAKNAGHAT, SOLAN-173 215, INDIA
Test-3 M, Tech. (T* Semester)
Electronics and Communication Engineering
Course name: Advance Satellite and Fiber Optic Communication Time: 1hr.30min
Course code: 07MIIECI02 Max. Mark: 30
Course credits: 03_
Answer all questions.
Q. N. 1(a) Explain what is meant by orthogonal polarization and the importance of this in satellite communication? |5]
(b) A continuous 12-km long optical fiber link has a loss of I.5dB/km. (i) what is the minimum optical power level that must be launched into the fiber to maintain an optical power level of 0.3(iW at receiving end? (ii) what is the required input power if the fiber has a loss of 2.5dB'km? [5]
Q. N. 2(a) Explain what are the important parameters those will examine the design optimization characteristics of single mode fiber? [5]
(b) An 8pm core diameter single mode fiber is having core refractive index of 1.5 and a cladding refractive index of 1.46. Determine the critical radius of curvature at which large bending occur if the operating wavelength is 1.55pm.
Q. N. 3(a) Explain the nonlinear effects on network performance in the fibre optic communication systems. (5)
(b) The directive gain of the antenna is 52dB, and the antenna efficiency is 0.95. What is the power gain of antenna? |5]
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