Top 150+ Solved Broadband Communication Systems MCQ Questions Answer
Q. The phenomenon which occurs when an incident wave strikes an interface at an angle greater than the critical angle with respect to the normal to the surface is called as
a. refraction
b. partial internal reflection
c. total internal reflection
d. limiting case of refraction
Q. Photonic crystal fibers also called as
a. conventional fibers
b. dotted fibers
c. stripped fibers
d. holey fibers
Q. One of the given statements is true for intermodal dispersion. Choose the right one.
a. low in single mode and considerable in multimode fiber
b. low in both single mode and multimode fiber
c. high in both single mode and multimode fiber
d. high in single mode and low in multimode fiber
Q. Meridional rays in graded index fibers follow
a. straight path along the axis
b. curved path along the axis
c. path where rays changes angles at core-cladding interface
d. helical path
Q. What is the unit of normalized frequency?
a. hertz
b. meter/sec
c. coulombs
d. it is a dimensionless quantity
Q. Skew rays follow a
a. hyperbolic path along the axis
b. parabolic path along the axis
c. helical path
d. path where rays changes angles at core-cladding interface
Q. Which of the following statements best explain the concept of material absorption?
a. a loss mechanism related to the material composition and fabrication of fiber.
b. a transmission loss for optical fibers.
c. results in attenuation of transmitted light.
d. causes of transfer of optical power
Q. Absorption losses due to atomic defects mainly include-
a. radiation
b. missing molecules, oxygen defects in glass
c. impurities in fiber material
d. interaction with other components of core
Q. The effects of intrinsic absorption can be minimized by-
a. ionization
b. radiation
c. suitable choice of core and cladding components
d. melting
Q. Which of the following is not a metallic impurity found in glass in extrinsic absorption?
a. fe2+
b. fe3+
c. cu
d. si
Q. The variant of non-zero-dispersion-shifted fiber is called as
a. dispersion flattened fiber
b. zero-dispersion fiber
c. positive-dispersion fiber
d. negative-dispersion fiber
Q. Rayleigh scattering and Mie scattering are the types of
a. linear scattering losses
b. non-linear scattering losses
c. fiber bends losses
d. splicing losses
Q. Dominant intrinsic loss mechanism in low absorption window between ultraviolet and infrared absorption tails is
a. mie scattering
b. rayleigh scattering
c. stimulated raman scattering
d. stimulated brillouin scattering
Q. 3dB optical bandwidth is always ___________ the 3dB electrical bandwidth.
a. smaller than
b. larger than
c. negligible than
d. equal to