Fiber Optic Study Guide Final
Questions and Answers 100%
Correct
Higher and Shorter - ANSWER - Light is electromagnetic energy with a _______
frequency and a _______ wavelength compared to radios
Infrared (IR) - ANSWER - What type of light is used in Fiber Optic transmissions?
Transmitter
Fiber Optic Cable
Receiver
Connector - ANSWER - What are the 4 items needed for a fiber optic system to
work?
0 dBM - ANSWER - 1 mW is the same as what in dBM?
dBM - ANSWER - How is the power measured in Fiber optics?
1550 nm - ANSWER - What fiber optic wavelength has the lowest loss?
1300, 1550, 850 - ANSWER - What wavelengths windows are used most for
communication in optical fibers?
1977 - ANSWER - What year was fiber optic cable first used in commercial telephone
systems in the U.S.?
Laser-diode - ANSWER - What light source is used for single mode fiber?
LED and VCSEL - ANSWER - What two light sources are used with multimode fiber?
, False, Different wavelengths of light travel at different velocities - ANSWER - All
wavelengths of light travel at the same speed. True o False. Why?
Multimode - ANSWER - Which type of fiber has the larger core size? Single mode or
multimode?
OSHA is responsible for enforcing it's standards on regulated entities - ANSWER -
What is OSHA responsible for?
1. USE A SMALLER CORE
2. Use Graded-index Fiber - ANSWER - What are two ways to reduce modal
dispersion?
The Wavelength gets Shorter with more Modes. - ANSWER - What happens to the
wavelength in optical fiber when the number of modes increase?
Air gaps and Mechanical Interconnections - ANSWER - Where does Fresnel reflection
occur?
Refraction - ANSWER - What is it called when light bends when moving between
water and air?
Core 1.457 and 1.471
Cladding 1.42 - ANSWER - What is the refractive index of the core and cladding of
optical fiber?
1310, 1550, 1625 - ANSWER - Single-mode systems usually operate at what three
wavelengths?
850 and 1300 - ANSWER - What two multimode wavelengths are the most
commonly used?
Questions and Answers 100%
Correct
Higher and Shorter - ANSWER - Light is electromagnetic energy with a _______
frequency and a _______ wavelength compared to radios
Infrared (IR) - ANSWER - What type of light is used in Fiber Optic transmissions?
Transmitter
Fiber Optic Cable
Receiver
Connector - ANSWER - What are the 4 items needed for a fiber optic system to
work?
0 dBM - ANSWER - 1 mW is the same as what in dBM?
dBM - ANSWER - How is the power measured in Fiber optics?
1550 nm - ANSWER - What fiber optic wavelength has the lowest loss?
1300, 1550, 850 - ANSWER - What wavelengths windows are used most for
communication in optical fibers?
1977 - ANSWER - What year was fiber optic cable first used in commercial telephone
systems in the U.S.?
Laser-diode - ANSWER - What light source is used for single mode fiber?
LED and VCSEL - ANSWER - What two light sources are used with multimode fiber?
, False, Different wavelengths of light travel at different velocities - ANSWER - All
wavelengths of light travel at the same speed. True o False. Why?
Multimode - ANSWER - Which type of fiber has the larger core size? Single mode or
multimode?
OSHA is responsible for enforcing it's standards on regulated entities - ANSWER -
What is OSHA responsible for?
1. USE A SMALLER CORE
2. Use Graded-index Fiber - ANSWER - What are two ways to reduce modal
dispersion?
The Wavelength gets Shorter with more Modes. - ANSWER - What happens to the
wavelength in optical fiber when the number of modes increase?
Air gaps and Mechanical Interconnections - ANSWER - Where does Fresnel reflection
occur?
Refraction - ANSWER - What is it called when light bends when moving between
water and air?
Core 1.457 and 1.471
Cladding 1.42 - ANSWER - What is the refractive index of the core and cladding of
optical fiber?
1310, 1550, 1625 - ANSWER - Single-mode systems usually operate at what three
wavelengths?
850 and 1300 - ANSWER - What two multimode wavelengths are the most
commonly used?
