Fiber Dispersion Measurements MCQ’s

This set of Optical Communication Multiple Choice Questions & Answers (MCQs) focuses on “Fiber Dispersion Measurements”.

1. The measurement of dispersion allows the _________ of the fiber to be determined.
a) Capacity
b) Frequency
c) Bandwidth
d) Power

2. How many types of mechanisms are present which produce dispersion in optical fibers?
a) Three
b) Two
c) One
d) Four

3. ___________ measurements give an indication of the distortion to the optical signals as they propagate down optical fibers.
a) Attenuation
b) Dispersion
c) Encapsulation
d) Frequency

4. Intermodal dispersion is nonexistent in ________ fibers.
a) Multimode
b) Single mode
c) Step index- multimode
d) Al-GU

5. Devices such as ___________ are used to simulate the steady-state mode distribution.
a) Gyrators
b) Circulators
c) Mode scramblers
d) Attenuators

6. Frequency domain measurement is the preferred method for acquiring the bandwidth of multimode optical fibers.
a) True
b) False

7. In the single mode fibers, the dominant dispersion mechanism is ____________
a) Intermodal dispersion
b) Frequency distribution
c) Material dispersion
d) Intra-modal dispersion

8. How many domains support the measurements of fiber dispersion?
a) One
b) Three
c) Four
d) Two

9. In pulse dispersion measurements, the 3dB pulse broadening for the fiber is 10.5 ns/km and the length of the fiber is 1.2 km. Calculate the optical bandwidth for the fiber.
a) 32 MHz km
b) 45 MHz km
c) 41.9 MHz km
d) 10 MHz km

10. Intra-modal dispersion tends to be dominant in multimode fibers.
a) True
b) False

11. The time domain dispersion measurement setup involves _____________ as the photo detector.
a) Avalanche photodiode
b) Oscilloscope
c) Circulator
d) Gyrator

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