GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University
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Subject Code: 2173904
GUJARAT TECHNOLOGICAL UNIVERSITY
Subject Name: Photonics
Time: 10:30 AM TO 12:30 PM
Instructions:
Attempt any FOUR questions out of EIGHT questions.
Figures to the right indicate full marks.
Q.1 (a) What do you mean by Light-Material interaction? 03
(b) Explain: type of light scattering. 04
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 material. 07
(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
(c) Write a short note Bio-Nanophotonics. 07
Q.6 (a) Define: Photo excitation 03
(b) Draw the sketch of Charge coupled device. 04
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
Total Marks: 56
Subject Code: 2173904
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020Subject Name: Photonics
Time: 10:30 AM TO 12:30 PM
Instructions:
Attempt any FOUR questions out of EIGHT questions.
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Make suitable assumptions wherever necessary.Figures to the right indicate full marks.
Q.1 (a) What do you mean by Light-Material interaction? 03
(b) Explain: type of light scattering. 04
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(c) Explain: Fiber optics and their applications. 07Q.2 (a) Define: Photorefractive materials. 03
(b) Explain: Avalanche photodiodes. 04
(c) Explain : Optoelectronic tweezers. 07
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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 material. 07
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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
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(b) Explain : Pockels effect 04(c) Write a short note Bio-Nanophotonics. 07
Q.6 (a) Define: Photo excitation 03
(b) Draw the sketch of Charge coupled device. 04
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(c) Write a short note on Adiabatic nanofabrication for nanostructure synthesis. 07Q.7 (a) What you mean by semiconductor optoelectronic devices? 03
(b) Explain : Photosynthesis 04
(c) Write a short note on Optoelectronic tweezers (OET). 07
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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
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Date: 30/01/2021Total Marks: 56
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