Frenzel Self-test in Fiber-Optics Communications – Answers

(Last Updated On: February 9, 2020)

Answers for Frenzel Self-test in Fiber-Optics Communications

Below are the answers key for Frenzel Self-test in Chapter 13: Fiber-Optics Communications from the book COMMUNICATIONS ELECTRONICS by Louis E. Frenzel. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

1. light

2. voice, video, computer data

3. telephone systems

4. glass, plastic

5. wide bandwidth

6. false

7. true

8. brittleness, difficult to work with

9. LEDs, semiconductor lasers

10. binary or digital pulses

11. photocell or light detector

12. repeaters

13. electromagnetic

14. pipe

15. b (Straight line)

16. micrometers (microns), nanometers

17. a (Red)

18. one-millionth, meter

19. 400, 700

20. b (More than 700 nm)

21. visible, infrared, ultraviolet

22. 300,000,000; 186,000

23. true

24. index, refraction

25. reflection, mirror

26. refraction

27. 30

28. critical

29. reflection

30. index, refraction

31. b (Glass)

32. cladding

33. glass, plastic

34. a (Core)

35. multimode step-index, single-mode step-index, multimode graded-index

36. modal dispersion

37. multimode step-index,

38. multimode graded-index, single-mode step-index

39. b (Decrease)

40. index, refraction

41. c (2 to 15 m)

42. protective coating

43. Kevlar

44. 2, 6, 12, 18, 24

45. attenuation

46. dispersion, absorption, scattering

47. decibels, kilometer

48. 31

49. false

50. a (40 ft.)

51. 76

52. true

53. connectors

54. LED. laser

55. 1.3

56. false

57. gallium arsenide

58. monochromatic

59. coherence

60. laser

61. resonant cavity

62. forward

63. ILD

64. ILD

65. reverse

66. leakage

67. avalanche photodiode

68. amplifier, comparator-or shaper

69. 30

70. 6.17. 18.5 (10 and 30 km)

Complete List of Self-test and Reviewers in Communications Electronics

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