Welcome to Optical Communications.
The quiz will randomly run 20 questions from Optical Communications which you have to answer in 10 minutes.
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[Communications]
Which of the following colors of light rays has the shortest wavelength?
[Communications]
A fiber core is glass with n=1.5. Calculate the reflectivity (in percent) from air
[Communications]
Responsivity is a parameter of the _____, in fiber-optic system
[Communications]
What type of optical transmitter requires no cladding on the fiber?
[Communications]
._____ of the light detector increases the fall time.
[Communications]
Which of the following is not an advantage of optical fiber?
[Communications]
The most common device used as a light detector in fiber optic communication system.
[Communications]
It is made from semiconductor material such as aluminum-galliumarsenide or gallium-arsenidephosphide.
[Communications]
The glass inside the fiber core must have a(n) _____ index of refraction than the index of refraction of cladding surrounding the fiber
[Communications]
What is the spreading of energy in time, which is caused by differing light wavelengths?
[Communications]
What wavelengths exhibit the least loss for transmission in glass?
[Communications]
An advantage of optic fiber rejecting an induced noise signals from magnetic field or solar storms flux.
[Communications]
A 1-km long optical fiber in air is made of fiber core with an index of refraction of 1.52 and a cladding with an index of refraction of 1.49, determine the acceptance angle.
[Communications]
What is the angle of refraction when the angle of incidence is 35° traveling from glass (n=1.4) to the air?
[Communications]
The main cause of attenuation in an optical fiber is _____.
[Communications]
The loss in signal power as light travels down a fiber is
[Communications]
An object farther from a converging lens than its focal point always has an _____ image
[Communications]
Which of the following is not a source of attenuation in a fiber-optic cable?
[Communications]
The amount of power per unit area in optical fiber is called _____.
[Communications]
What devices may be used as an optical fiber transmitter?
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