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Communications
An advantage of optic fiber rejecting an induced noise signals from magnetic field or solar storms flux.
Communications
An object farther from a converging lens than its focal point always has an _____ image
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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.
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The index of refraction of the core in a fiber-optic cable is _____ the index of refraction of the cladding
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What are the rays which do not pass though the core axis, but follow a spiral path of reflecting segments down the fiber core?
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The ratio of the number of photoelectrons collected to the number of incident photons per unit time
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One of the advantages of fiber optic which is referred to the volume of capacity of signals it can carry
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The loss in signal power as light travels down a fiber is
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What is the critical angle (of incidence) at a glass/fused quartz interface?
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It is the scattering of some of the light energy when monochromatic light is passed through a medium such as glass.
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What does a light traveling in air optical fiber follow?
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The dielectric material of an optical fiber surrounding the core
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Responsivity is a parameter of the _____, in fiber-optic system
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The main cause of attenuation in an optical fiber is _____.
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Loss due to the diffraction of light when it strikes on the irregularities formed during the manufacturing process of the fiber optics.
Communications
What devices may be used as an optical fiber transmitter?
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The wavelength of red in the visible light spectrum is around ____
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Which of the following is not used as an optical detector?
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Compute the power for an ideal 1550-nm light source that generates 20 billion photons per second.
Communications
What is the spreading of energy in time, which is caused by differing light wavelengths?
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