Single-mode fiber is made from: a. glass b. plastic c. both a and b d. none of the above

Single-mode fiber is made from:
a. glass b. plastic c. both a and b d. none of the above
by

1 Answer

Answer :

a. glass
by

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What phenomenon will result if the glass fiber is exposed to long periods of high humidity? ∙ A. stress fatigue ∙ B. core corrosion ∙ C. stress corrosion ∙ D. cladding corrosion

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A ____________________ diode is the usual light detector for single-mode

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A ____________________ diode is the usual light source for single-mode cable.

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Single-mode step-index cable has a core diameter in the range of ∙ A. 100 to 1000 micrometer ∙ B. 50 to 100 micrometer ∙ C. 2 to 15 micrometer ∙ D. 5 to 20 micrometer

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For a single mode optical cable with 0.25 dB/km loss, determine the optical power 100 km from a 0.1-mW light source. ∙ A. -45 dBm ∙ B. -15 dBm ∙ C. -35 dBm

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A single-mode cable does not suffer from: a. modal dispersion b. chromatic dispersion c. waveguide dispersion d. all of the above

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A single fiber can handle as many voice channels as ∙ A. a pair of copper conductors ∙ B. a 1500-pair cable ∙ C. a 500-pair cable ∙ D. a 1000-pair cable

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Under normal condition, a single fiber should not be used for a two-way communication mainly because of ∙ a. Loss ∙ b. Fading ∙ c. Noise ∙ d. Attenuation

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FDDI uses ____________________ mode cables.

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The term critical angle describes ∙ A. the point at which light is refracted ∙ B. the point at which light becomes invisible ∙ C. the point at which light has gone from the refractive mode to the reflective mode ∙ D. the point at which light has crossed the boundary layers from one index to another

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Modal dispersion is caused by the ∙ a. Dependence of wavelength on index of refraction ∙ b. Dependence of propagation constant on index of refraction ∙ c. Dependence of the propagation constant on the wavelength ∙ d. Dependence of the propagation constant on the mode number

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Material dispersion is caused by the ∙ a. Wavelength dependence of the index of refraction ∙ b. Wavelength independence of the index of refraction ∙ c. Dependence of the propagation constant on the mode number ∙ d. Independence of the propagation constant on the mode number

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How many longitudinal modes can fall within a laser’s gain bandwidth? ∙ a. 2 ∙ b. 5 ∙ d. No fixed limit, dependent on bandwidth and mode spacing ∙ c. 9

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Define fiber optics.

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Last Answer : Fiber optics is the branch of optical technology concerned with the transmission of radiant power (light energy) through fibers.

Calculate the total rise time for a fiber-optic system if the transmitter, receiver, and cable each have a rise time of 50 nanoseconds.

Description : Calculate the total rise time for a fiber-optic system if the transmitter, receiver, and cable each have a rise time of 50 nanoseconds.

Last Answer : 86.6 nanoseconds