Optical Fibers_2 Objective Questions:


Ques 1. On what does micro-bending losses depends?
a) Core material
b) Refractive index
c) Diameter
d) Mode and wavelength

Answer: d

Ques 2. The diffusion of hydrogen into an optical fiber affects the ______________

a) Transmission of optical light in the fiber
b) Spectral attenuation characteristics of the fiber
c) Core of the fiber
d) Cladding of the fiber

Answer: b

Ques 3. __________ can induce a considerable amount of attenuation in the optical fibers.

a) Micro-bending
b) Dispersion
c) Diffusion of hydrogen
d) Radiation Exposure

Answer: d

Ques 4. The cable is normally covered with an outer plastic sheath to reduce _______________

a) Abrasion
b) Armor
c) Friction
d) Dispersion

Answer: a

Ques 5. A permanent joint formed between two different optical fibers in the field is called as a

a) Fiber splice
b) Fiber connector
c) Fiber attenuator
d) Fiber dispersion

Answer: a

Ques 6. How many types of fiber splices are available?

a) One
b) Two
c) Three
d) Four

Answer: b

Ques 7. Optical fiber couplers are also called as ________________

a) Isolators
b) Circulators
c) Directional couplers
d) Attenuators

Answer: c

Ques 8. A device which is made up of isolators and follows a closed loop path is called as a ____________

a) Circulator
b) Gyrator
c) Attenuator
d) Connector

Answer: a

Ques 9. _____________ provides operation at high transmission rate.

a) Optical intensity modulators
b) Demodulators
c) Circulators
d) Electro-absorption modulators

Answer: d

Ques 10. Which of the following techniques are easy to implement?

a) Amplitude shift keying
b) Phase shift keying
c) Frequency shift keying
d) SCM

Answer: c

These are most asked Optical Fibers mcqs with answers and most important Optical Fibers  interview and Viva question.
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