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Optical Communication MCQ Questions & Answers | ECE

Learn Optical Communication MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Optical Communication MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-6 section-1

Each section contains 100 MCQs on Optical Communication .
51
The high index contrast enables the PCF core to be reduced from around 8 μmin conventional fiber to . . . . . . . . .
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Answer & Solution
Answer: Option A
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52
Absorption losses due to atomic defects mainly include . . . . . . . .
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Answer: Option B
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53
The modal noise occurs when uncorrected source frequency is?
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Answer & Solution
Answer: Option A
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54
An optical fiber has a core radius 2μm and a numerical aperture of 0.1. Will this fiber operate at single mode at 600 nm?
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Answer & Solution
Answer: Option A
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55
Skew rays follow a . . . . . . . .
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Answer & Solution
Answer: Option C
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56
What is pulse dispersion per unit length if for a graded index fiber, 0.1μs pulse broadening is seen over a distance of 13 km?
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Answer: Option B
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57
The optical source used for detection of optical signal is . . . . . . . .
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Answer & Solution
Answer: Option B
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58
The optical source used in a fiber is an injection laser with a relative spectral width $$\frac{{{\sigma _\lambda }}}{\lambda }$$ of 0.0011 at a wavelength of 0.70μm. Estimate the RMS spectral width.
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Answer: Option C
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59
$${\Gamma _g} = \frac{{d\beta }}{{{C^ * }dk}}.$$   What is β in the given equation?
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Answer: Option B
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60
Disturbance along the fiber such as vibrations, discontinuities, connectors, splices, source/detectors coupling result in . . . . . . . .
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Answer & Solution
Answer: Option A
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