Mike's PBX Cookbook

Fiber Optic Test

Corning TS-LAN-500 cheater.

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  1. What are the two basic types of fiber?
  2. The 3 parts of a fiber are (the 3 C's)?
  3. The North American Standard core sizes for Milti-Mode fiber are?
  4. The core size for Coring Single-Mode fiber is?
  5. The cladding size for both Single-Mode and Multi-Mode fiber is?
  6. What invention in the 1960's made fiber optics more feasible?
  7. Index of Refraction equals:
  8. As the index of refraction increases, the speed of light in a medium
  9. In what portion of th fiber does light travel for fastest? Core or cladding?
  10. The principle of operation, which permits propogation of light in Single-Mode fiber, is known as
  11. The loss of opticle power is referred to as?
  12. What are the two types of attenuation?
  13. Which type of attenuation is due to traits within the fiber?
  14. Which type of attenuation can be caused by the cable installer?
  15. What are the two types of extrinsic attenuation?
  16. What type of bending is due to tight tie wraps?
  17. What type of bending is due to exceeding the bend radius?
  18. What is dispersion?
  19. What kind of dispersion can be a problem in Multi-Mode fiber?
  20. What kind of dispersion affects Single-Mode fiber?
  21. What is bandwidth?
  22. What is the bandwidth of Single-Mode fiber?
  23. What are the two optimal wavelengths used in a Multi-Mode system?
  24. What are the two optimal wavelengths used in a Single-Mode system?
  25. A 3db loss in power is a...
  26. Why is 1310 an optimum wavelength for standard Single-Mode?
  27. What is the advantage of Dispersion shifted fiber?
  28. Is the Index of Refraction of a standard Single-Mode fiber typically the same value across the core? Yes/No/Why?
  29. Is the Index of Refraction of a standard Multi-Mode fiber typically the same value across the core? Yes/No/Why?
  30. Does all the light travel in the core of the fiber? Yes/No.
  31. In a Single-Mode fiber what is the term used to describe the area that light actually travels, and whats its value?
  32. Name two types of fiber optic designs?
  33. Loose tube cable is optimised for outdoor use. How?
  34. Name two types of Corning Cable Systems Loose Tube cables:
  35. What does "all dielectric" mean?
  36. Name two self supporting cable types?
  37. What is the standard number of fibers per tube in Corning Cable Systems cable?
  38. Where are the odd fiber tubes usually located?
  39. Tight buffered cable is optimised for which use?
  40. Name two types of Corning Cable Systems Tight Buffered cables:
  41. What is the main load bearer for Corning Cable Systems cable?
  42. List 3 functions of the central member:
  43. The minimum number of buffer tube positions in a stranded loose tube cable is? And why?
  44. The outside diameter of a tight buffered fiber is?
  45. The outside diameter of a fiber in a stranded loose tube cable is?
  46. Can I directly connectorise a 250 micron fiber?
  47. What are the three NEC lisitngs for indoor cable?
  48. Can I install a Plenum rated cable in a riser shaft?
  49. Can I install a riser cable in a plenum space?
  50. How much outdoor cable may I bring indoors before I must transition to an indoor cable?
  51. What are the main placement consideration when installing fiber optic cable?
  52. List two reasons why leaving cable slack is important?
  53. What principle does the OTDR rely on to get light back to the receiver?
  54. Give three examples of when you would use an OTDR?
  55. How does the OTDR determine distance?
  56. If the index of refraction is entered incorrectly in the OTDR set-up menu, will the measurements be accurate? Yes/No/Why?
  57. Which method of measuring connector loss is more accurate, 2 point or LSA, and why?
  58. What is a ghost?
  59. What is a gainer, and what needs to be done when one is found?
  60. OTDR Diagram - describe each event.
  61. When measuring the fiber length using an OTDR, will the fiber length be the same as the sheath length on a standard loose tube cable? Yes/No/Why?
  62. Explain why a mechanical splice may appear as a spike on the OTDR trace and a fusion splice will not?
  63. What is the name of the process that consists of alligning and fusing the ends of two fibers together?
  64. The two methods of alligning and estimating fusion splices are? Which is used for Single Mode and why?
  65. Can you use LID on a 900um fiber?
  66. What are the most critical issues in fusion splicing?
  67. What are some critical steps in achieving a good cleave?
  68. Can you use a snap cleave to splice?
  69. What should you do if a fiber breaks under a clamp pad while cleaving?
  70. What are the differences between OS ONE and M90e fusion splicers?
  71. What are the different ways to terminate a fiber?
  72. What are the critical steps in Unicam instalation?
  73. What are the two steps involved with properly cleaning a fiber optic connector?
  74. What are the two types of optical field tests?
  75. What information do you need to calculate the loss budget for a fiber optic system with patch panels on each end of the system?
  76. List the equation for figuring the number of jumpers to reference?
  77. What is the most common jumper reference scenario and why?
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