Top 150+ Solved Optical Communication MCQ Questions Answer
Q. Multimode step index fiber has
a. large core diameter & large numerical aperture
b. large core diameter and small numerical aperture
c. small core diameter and large numerical aperture
d. small core diameter & small numerical aperture
Q. Multimode step index fibers have a bandwidth of
a. 2 to 30 mhz km
b. 6 to 50 mhz km
c. 10 to 40 mhz km
d. 8 to 40 mhz km
Q. 2 BASIC OPTICAL LAWS AND DEFINITIONS, OPTICAL MODES AND CONFIGURATIONS
a. lower purity
b. higher purity than multimode step index fibers.
c. no impurity
d. impurity as same as multimode step index fibers.
Q. The performance characteristics of multimode graded index fibers are
a. better than multimode step index fibers
b. same as multimode step index fibers
c. lesser than multimode step index fibers
d. negligible
Q. Multimode graded index fibers have overall buffer jackets same as multimode step index fibers but have core diameters
a. larger than multimode step index fibers
b. smaller than multimode step index fibers
c. same as that of multimode step index fibers
d. smaller than single mode step index fibers
Q. In single mode fibers, which is the most beneficial index profile?
a. step index
b. graded index
c. step and graded index
d. coaxial cable
Q. Multimode graded index fibers with
a. single mode fibers
b. multimode step fibers
c. coaxial cables
d. multimode graded index fibers
Q. Single mode fibers allow single mode propagation; the cladding diameter must be at least
a. twice the core diameter
b. thrice the core diameter
c. five times the core diameter
d. ten times the core diameter
Q. A fiber which is referred as non- dispersive shifted fiber is?
a. coaxial cables
b. standard single mode fibers
c. o-band
d. c-band and l-band
Q. Fiber mostly suited in single-wavelength transmission in O-band is?
a. low-water-peak non dispersion-shifted fibers
b. standard single mode fibers
c. low minimized fibers
d. non-zero-dispersion-shifted fibers
Q. When the dimensions of the guide are reduced, the number of also decreases.
a. propagating nodes
b. electrons
c. holes
d. volume of photons
Q. The planar waveguides may be fabricated from glasses and other isotropic materials such as and
a. octane and polymers
b. carbon monoxide and diode
c. fluorides and carbonates
d. sulphur dioxide and polymers
Q. Which of the following devices are less widely used in the field of optical fibre communications?
a. acousto-optic devices
b. regenerators
c. reflectors
d. optical translators