Fiber Optics Study Guide Questions and Answers All Correct
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Module
Fiber Optics
Institution
Fiber Optics
Fiber Optics Study Guide Questions and Answers All Correct
What is an inspection scope used for? - Answer- Visual inspection of the connector end face
In the NEC article 770 it states that unlisted cable shall extend no more than how many feet inside the structure before transitioning to liste...
Fiber Optics Study Guide
Questions and Answers All
Correct
What is an inspection scope used for? - Answer- Visual inspection of the connector end
face
In the NEC article 770 it states that unlisted cable shall extend no more than how many
feet inside the structure before transitioning to listed cables? - Answer- 50ft
Which article of the NEC covers grounding and bonding? - Answer- Article 250
What does NEC stand for? - Answer- National Electrical Code
What is the generally accepted dynamic bend radius of a fiber optic cable? - Answer- 20
times the outside diameter
What class of Laser has the fewest hazards associated with it? - Answer- Class I
When inspecting the end face of a connector where you are allowed to have minor
defects? - Answer- Outer cladding
If you have a cross section of a fiber optic cable where is the cladding (center circle,
middle, or outer ring)? - Answer- Middle
What does the acronym LASER stand for? - Answer- Light Amplification by Stimulated
Emission of Radiation
What does "OFCR" mean? - Answer- Optical Fiber Conductive Riser
What are the 3 fiber fabrications methods to make a Preform? - Answer- MCVD, OVD,
VAD
What is the diameter for the Acrylate Coating? - Answer- 250um
What are three types of Dispersion? - Answer- Waveguide, Chromatic, Modal
, What component of an optical power meter converts light to electrical energy? -
Answer- Photo diode
What is the purpose of the cladding? - Answer- Creates total internal relfection
Which class of Lasers has the highest power and is used for surgery, research, drilling,
cutting, welding and micromachining? - Answer- Class IV
Name three advantages of Fiber Optics versus Copper Cable - Answer- Security, low
attenuation, speed
What do sequential markings on the fiber jacket represent? - Answer- Length of the
cable
Name 3 ways fiber optics is used today? - Answer- Security, medical, utility
Never look directly into the end of fiber cables - especially with a microscope until you
are certain there is no light being transmitted down it. True or False - Answer- True
Electrodes in a fusion splicer become rounded or corroded when worn and should be
replaced when the arc count reaches (blank), or at the interval recommended by the
manufacturer. - Answer- 1000
What is the ferrule diameter for a ST or SC connector? - Answer- 2.5nm
What is the first event on an OTDR trace? - Answer- The Dead zone
Which has more bandwith, Single-mode or Multi-mode? - Answer- Single-Mode
Light is electromagnetic energy with a (blank) frequency and a (blank) wavelength
compared to radio waves. - Answer- Higher, Shorter
What type of light is used in Fiber Optic transmissions? - Answer- IR
What are the 4 items are needed for a fiber optic system to work? - Answer-
Transmitter, Fiber Optic Cable, Receiver, Connectors
1 mW is the same as what in dBM? - Answer- 0dBM
How is power measured in fiber optics? - Answer- dBM
What fiber optic wavelength has the lowest loss? - Answer- 1550nm
What wavelengths windows are used most for communications in optical fibers? -
Answer- 850nm, 1500nm, 1300nm
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