Thursday, January 20, 2022

Dr.A.P.J.Abdul Kalam University BE VII SEM ALL BRANCH Optical Communication [EC703] Dec - 2020 Question Paper

Dr.A.P.J.Abdul Kalam University

Bachelor of Engineering

Seventh Semester Main Examination, Dec- 2020

Optical Communication [EC703]

Branch: EC

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of eight.

2. All question carry equal marks.

Q.1 (a) Discuss the merits of optical communication.

(b) Discuss about the single mode fiber and graded index fiber.

Q.2 (a) Discuss about photonic crystal fibers.

(b) Explain MCVD technique for fabricating of optical fibers.

Q.3 (a) Discuss about the principle working of LED. Also explain the quantum efficiency.

(b) Discuss about fiber splicing techniques.

Q.4 (a) Explain the principle working LASER source.

(b) Discuss about different causes of attenuation in fibers.

Q.5 (a) Discuss the principle working of Avalanche photodiode.

(b) Derive the expression of detector response time.

Q.6 (a) Discuss about digital receiver performance and also explain eye diagram.

(b) Discuss the principle of link power budget calculation.

Q.7 (a) Discuss the principle working of passive optical star couple, isolator and circulators.

(b) Explain the principle working of Erbium doped fiber amplifier.

Q.8 (a) Explain the Burst mode receiver and MEMS technology.

(b) Discuss about the OTDR.

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