Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2173904 Photonics Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2173904 Date:30/01/2021
Subject Name:Photonics
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What do you mean by Light-Material interaction?
03
(b) Explain: type of light scattering.
04
(c) Explain: Fiber optics and their applications.
07
Q.2 (a) Define: Photorefractive materials.
03
(b) Explain: Avalanche photodiodes.
04
(c) Explain : Optoelectronic tweezers.
07
Q.3 (a) Draw schematic representation of three-dimensional photonic crystals.
03
(b) Differentiate : absorption and transmittance
04
(c) Write a short note on solar cell, in the vicinity of light interaction with
07
material.
Q.4 (a) What do you mean by Interference and Polarization light?
03
(b) Explain: various parameters associated with medical uses of LASER.
04
(c) Explain: Principle and operation of LED in the vicinity of photonics.
07
Q.5 (a) What do mean by Nano photonics?
03
(b) Explain : Pockels effect
04
(c) Write a short note Bio-Nano photonics.
07
Q.6 (a) Define: Photo excitation
03
(b) Draw the sketch of Charge coupled device.
04
(c) Write a short note on Adiabatic nanofabrication for nanostructure
07
synthesis.
Q.7 (a) What you mean by semiconductor optoelectronic devices?
03
(b) Explain : Photosynthesis
04
(c) Write a short note on Optoelectronic tweezers (OET).
07
Q.8 (a) What do you mean by Kerr effect?
03
(b) Write down various medical applications associated with UV Radiation.
04
(c) Write a short note on Phototransistor.
07
*************
1
This post was last modified on 04 March 2021