604
ECE
Jharkhand University of Technology, Ranchi
Diploma 6th Semester Examination, 2023
Subject : Optical Fiber Communication Subject Code : ECE 604
Time Allowed :3 Hours Full Marks: 80
Pass Marks : 26
Answer in your own words.
Answer five questions in which Question No. 1 is compulsory.
Allquestions carry equal marks.
1. Choose the corect answer: 2x8
(i) In an optical fiber, the concept of numerical aperture is applicable in describing the ability of
(a) light collection (b) light scattering
(c) light dispersion (d) light polarization
(ii) Which method determines the dispersion limitation of an optical link?
(a) Link power budget (b) Rise time budget
(c) Both (a) and (b) (d) None of these
(ii) Approximately what is the frequency limit of an optical fiber?
(a) 20 kHz (b) 1MHz
(c) 100 MHz (d) 40 GHz
(iv) In a graded index fiber, total reflected light takes a
(a) straight path (b) parabolic path
(c) elliptical path (a) circular path
(v) Which of the following is the principle of operation of fiber-optic cable?
(a) Absorption (b) Dispersion
(c) Distortion (d) Reflection
(vi) Optical fibers are used in
(a) CAT Scans (b) X-ray photos
(c) Ultrasound scans (d) Endoscopy
(vii) Main advantage of fiber optic cable over co-axial cable is
(a) low loss (b) easy handling
(c) less weight (d) easy testing
26661 Please Turn Over
548
ECE
Jharkhand University of Technology, Ranchi
Diploma 6th Semester Examination, 2023
Subject : Optical Fiber Communication Subject Code : ECE 604
Time Allowed :3 Hours Full Marks: 80
Pass Marks : 26
Answer in your own words.
Answer five questions in which Question No. 1 is compulsory.
Allquestions carry equal marks.
1. Choose the corect answer: 2x8
(i) In an optical fiber, the concept of numerical aperture is applicable in describing the ability of
(a) light collection (b) light scattering
(c) light dispersion (d) light polarization
(ii) Which method determines the dispersion limitation of an optical link?
(a) Link power budget (b) Rise time budget
(c) Both (a) and (b) (d) None of these
(ii) Approximately what is the frequency limit of an optical fiber?
(a) 20 kHz (b) 1MHz
(c) 100 MHz (d) 40 GHz
(iv) In a graded index fiber, total reflected light takes a
(a) straight path (b) parabolic path
(c) elliptical path (a) circular path
(v) Which of the following is the principle of operation of fiber-optic cable?
(a) Absorption (b) Dispersion
(c) Distortion (d) Reflection
(vi) Optical fibers are used in
(a) CAT Scans (b) X-ray photos
(c) Ultrasound scans (d) Endoscopy
(vii) Main advantage of fiber optic cable over co-axial cable is
(a) low loss (b) easy handling
(c) less weight (d) easy testing
26661 Please Turn Over
548
