Fiber Optics 2024 Exam Questions and Answers All Correct
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Module
Fiber Optics
Institution
Fiber Optics
Fiber Optics 2024 Exam Questions and Answers All Correct
Fiber optic transmissions are not susceptible to - Answer- interruption or distortion by electrical noise
An advantage of fiber optics is that they can ____________ of data - Answer- carry high frequencies
Concerning security, fiber...
Fiber Optics 2024 Exam Questions
and Answers All Correct
Fiber optic transmissions are not susceptible to - Answer- interruption or distortion by
electrical noise
An advantage of fiber optics is that they can ____________ of data - Answer- carry high
frequencies
Concerning security, fiber optics - Answer- cannot be tapped without physically
disrupting the service
A basic fiber optics communication system is made up of - Answer- Fiber optic cable,
fiber optic strand, transmitter, receiver, and connectors
Very small core fibers work best with __________ which can supply narrow beams of
light. - Answer- laser diodes
LED's operate at - Answer- slower transmission speeds.
Two key concepts in the study of light transmission are - Answer- Signal propagation
and signal attenuation
The ________ of a material is the ratio of the speed of light in a vacuum compared to
the speed of light in a certain material. - Answer- refractive index
The refractive index is always - Answer- greater than 1
The angle at which the light enters the material is - Answer- incidence
The angle at which light exits the material is - Answer- refraction
Light rays entering a fiber at an angle above a certain value will be accepted and guided
within the core of the fiber, this angle is known as - Answer- the acceptance angle
The ___________ is the range of angles over which the system can accept or emit light
- Answer- numerical aperture
The single major factor in signal attenuation is the - Answer- wavelength
Each fiber optic fiber has a characteristic attenuation that is measured in - Answer-
decibels
, The spreading out of the signal is known as - Answer- pulse dispersion
As fiber length increases, both - Answer- data rate and bandwidth decrease
Major factors in fiber optics are - Answer- speed, capacity, and proper alignment
The appeal of fiber to the telecommunication industry is not the low attenuation, but the
- Answer- high-speed transmission capabilities
Most fibers have an additional coating around the cladding called a - Answer- buffer
Light in high-order modes is more apt to be lost due to imperfections like
_______,________, and______ in the fiber - Answer- connector separations,
misalignments, or sharp bends
The three most common fiber materials are - Answer- glass, plastic, and silica
Compared with other fibers, plastic fibers are - Answer- limited in loss and bandwidth
_______ is a term used in electronics to indicate one way transmission. - Answer-
Simplex
The cable is underwater, including transoceanic applications - Answer- submarine
Similar to direct burial, but the cable is inside a duct or conduit - Answer- indirect burial
The device used to convert a light signal into an electrical signal at the receiver is
known as a(n) - Answer- Photosensitive detector
Signal propagation is defined as________. - Answer- the characteristic movement of a
light signal through a medium
The value that represents the amount of light lost within a fiber optic system is _______.
- Answer- attentuation
The two basic components of an optical fiber are the ________. - Answer- core and
cladding
The term used when there are several paths through which light can travel in an optical
fiber is ________. - Answer- multi-mode
A mode is defined as __________. - Answer- one path a light ray can travel through a
material.
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