Optical Fiber Communication Test Questions

Q.  Which kind of dispersion phenomenon gives rise to pulse spreading in single mode fibers?

a. Intramodal
b. Intermodal
c. Material
d. Group Velocity


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Which among the following are the disadvantages of an optical feedback transimpedance receiver? A. Increase in receiver input capacitance B. Increase in dark current C. Decrease in receiver input capacitance D. Decrease in dark current
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MCQs:   Which category/ies of wavelength division multiplexer comprise/s two 3dB couplers where the splitting of an incident beam takes place into two fiber paths, followed by the recombination with second 3-dB coupler?
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MCQs:  Which among the following controls the length of Fabry-Perot interferometer so that it can act as a tunable optical filter?
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MCQs:  In circulator, an optical path of signal follows _______
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MCQs:  Which among the following is/are responsible for generating attenuation of an optical power in fiber?
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MCQs:  Consider the assertions/ characteristics given below. Which type of attenuation measurement technique exhibits these characteristics? 1. Necessity of accessing both ends of fiber. 2. Measurements corresponding to specific wavelengths. 3. Requirement of spectral response over a range of wavelengths.
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MCQs:  For neglecting the pulse dispersion in the digital systems, the rms width of fiber impulse response must be _________one-quarter of the pulse spacing.
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MCQs:  If a noisy channel has a bandwidth of 4 MHz with signal to noise ratio of about 1, what would be the maximum capacity of the channel?
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MCQs:  In the structure of fiber optic cable, the refractive index of core is always _______the refractive index of cladding.
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MCQs:  The order of mode is equal to the number of field____ across the guide.
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MCQs:  Which among the following represents the lateral shift of a light beam on reflection at a dielectric interface?
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MCQs:  Why are plastic clad silica fiber optic cables not used widely?
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MCQs:  In cables, water is prevented from filling the spaces with __________resistant compounds.
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MCQs:  Which reason/s is/are responsible for the occurrence of non-linear Cross Phase Modulation (XPM)?
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MCQs:  What is/ are the consequence/s of Self Phase Modulation in non-linear optics?
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MCQs:  Which type of fiber-optic coupler causes the distribution of an optical power from more than two input ports among the several output ports?
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MCQs:  Which optical devices are adopted or applicable for routing signals from one waveguide to another?
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MCQs:  Which among the following characteristics of Laser light specifies the precise movement of all individual light waves together through time and space?
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MCQs:  Which modes are acknowledged due to their association with electromagnetic field and beam profile in the direction perpendicular to the plane of pn junction?
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MCQs:  Which type of injection laser involves the use of geometry for fabrication of the multimode injection laser with a single or small number of lateral modes?
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