Optical Detection Principles MCQ’s

Electronics & Communication Engineering Optical Communication

This set of Optical Communication Multiple Choice Questions & Answers (MCQs) focuses on “Optical Detection Principles”.

1. The depletion region must be ____________ to allow a large fraction of the incident light to be absorbed in the device(photodiode).
a) Thick
b) Thin
c) Long
d) Inactive

2. The process of excitation of an electron from valence band to conduction band leaves an empty hole in the valence band and is called as ____________
a) Detection
b) Absorption
c) Degeneration of an electron-hole pair
d) Regeneration of an electron-hole pair

3. P-n photodiode is forward biased.
a) True
b) False

4. __________________ always leads to the generation of a hole and an electron.
a) Repulsion
b) Dispersion
c) Absorption
d) Attenuation

5. Electric field in the depletion region should be high.
a) True
b) False

6. How many types of optical detectors are available?
a) One
b) Four
c) Two
d) Three

7. The electron hole pairs generated in a photodiode are separated by the ____________
a) Magnetic field
b) Electric field
c) Static field
d) Depletion region

8. The photocurrent of an optical detector should be __________
a) Less
b) More
c) Linear
d) Non-linear

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