STUPIDSID
1 (a)
What are the advantages of optical fiber commumnication?Expalin in detail.
6 M
1 (b)
Explain briefly the fiber materials
7 M
1 (c)
with a neat diagram ,expalin the photonic crystal fibers,in optical fiber communication.
7 M
2 (a)
Expain the macro bending loss in optical fiber.
6 M
2 (b)
expain the following terms in optical communication;
attenuation
absorption
Scatttering losses
(note:Mathmatical expression and graphs may be given wherever necessary)
attenuation
absorption
Scatttering losses
(note:Mathmatical expression and graphs may be given wherever necessary)
7 M
3 (a)
Give comparison between laser diode and light emitting diode.considering the various parameter.
6 M
3 (b)
A double heterojunction InGaAsp LED emitting at a peak wavelength of 1310nmhas radiative and non radiative recombination times of 30 and 10ns respectivly.The drive current is 40mA.calculate the:
bulk recombination lifetime
internal quantum efficinency
Internal powerlevel.
bulk recombination lifetime
internal quantum efficinency
Internal powerlevel.
7 M
3 (c)
Explain the operation of avalanche photo diode with schematic diagram and seprate
7 M
4 (a)
Expalin the example of possible Lensing schemes used to improve optical source to fiber coupling efficiency?
6 M
4 (b)
What is fiber splicing?Expalin the fussion splicing of optical fibers with relevant diagram.
7 M
4 (c)
What are the principle requirements of a good connector ?Explain the alignment scheme used tapered-sleeve fiber-optic connector with relvant diagram
7 M
5 (a)
Explain the receiver sensitivity of an optical receiver.Drive an expression for receiver sensitivity.
6 M
5 (b)
Explain the general configuaration of an eye diagram showing the defination of fundamental measurements parameter.and also explin noise margin and timing jiter parameters
7 M
5 (c)
Expalin the operation of Burst mode receiver data pattern and signal level variation in pulses
7 M
6 (a)
Expalin the operation of multi-channel amplitude modulation standard technique for frequency division multiplexing of N independent information bearing signals.
7 M
6 (b)
Explain the radio-over-fiber links with a concept of a broadband wireless access network for interconnecting antenna base station with the central controlling office.
6 M
6 (c)
Expalain the link power budget,with a relevent diagram
7 M
7 (a)
Explain the wavelenghth division multiplexing network containg various type of optical amplifires
7 M
7 (b)
Explain the optical Isolator with a design and operation of a polarization independent isolator mode of three mainature optical components
6 M
7 (c)
Explian the operation of optical Add/Drop multiplexers,with a relevant diagram
7 M
8 (a)
Explain the configuration of SONET/SDH rings,with relevant digrams
10 M
8 (b)
Write notes on the following:
optical amplifier
High speed light wave links
optical amplifier
High speed light wave links
10 M
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