Q201
Open questionIf n1 and n2 are the refractive indices of the core and cladding respectively, the maximum acceptance angle at the air-core interface should be
Select an option to see the answer and solution.
ECE · all questionsOptical Communication
Optical Communication
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
249
Questions
11/13
Page
Pick an option on a question to see the right answer and solution.
Q202
Open questionFor a single mode optical cable with 0.25 dB/km loss, the optical power 100 km from a 0.1 mW source will be . . . . . . . .
Select an option to see the answer and solution.
Q203
Open questionNumerical aperture is describing the ability of
Select an option to see the answer and solution.
Q204
Open questionThe distortion in the transmission of carrier frequencies in an underground cable can be eliminated by using
Select an option to see the answer and solution.
Q205
Open questionA single mode fiber does not suffer from which type of dispersion?
Select an option to see the answer and solution.
Q206
Open questionThe sources for fibre optical communication is
Select an option to see the answer and solution.
Q207
Open questionThe critical angle θc in an optical fiber is given
by . . . . . . . . Where n1 is refractive index of medium 1 and n2 is the refractive index of medium 2.
Select an option to see the answer and solution.
Q208
Open questionThe configuration used by a line communication system capable of transmitting a data at the rate of 1000 Mbps is
Select an option to see the answer and solution.
Q209
Open questionSome of the diffracted light continues down the fiber and some of it escapes through the cladding. The light rays that escape represent a loss in light power which is called
Select an option to see the answer and solution.
Q210
Open questionAn optical fiber cable laid underground has developed a discontinuity at a distance d from the source end. The fault can be located using the instrument
Select an option to see the answer and solution.
Q211
Open questionModern day optical fibers have losses of the order of
Select an option to see the answer and solution.
Q212
Open questionCopper-network can be converted to fibre optics by using
Select an option to see the answer and solution.
Q213
Open questionIn an optical fiber, the pulse dispersion effect is minimized by
1. Using a high frequency light source
2. Using plastic cladding
3. Minimizing the core diameter
Which of the above statements is/are correct?
1. Using a high frequency light source
2. Using plastic cladding
3. Minimizing the core diameter
Which of the above statements is/are correct?
Select an option to see the answer and solution.
Q214
Open questionIn single mode fibers, the most beneficial index profile is
Select an option to see the answer and solution.
Q215
Open questionThe typical core dimensions of single mode step-index fiber is
Select an option to see the answer and solution.
Q216
Open questionIdentify the false statement for interferomatric method:
Select an option to see the answer and solution.
Q217
Open questionIn an optical fibre, if the total internal reflection takes place, which of the following conditions have to be satisfied?
Select an option to see the answer and solution.
Q218
Open questionNon-linear Cross Phase Modulation (XPM) occurs due to
Select an option to see the answer and solution.
Q219
Open questionThe Dispersion Shifted fiber is normally designed to have zero chromatic dispersion at
Select an option to see the answer and solution.
Q220
Open questionAn optical fibre has a reflective index of 1.641 for the core and 1.422 for the cladding. The critical angle above which the ray will be totally internally reflected is:
Select an option to see the answer and solution.