STUPIDSID
1 (a)
Differentiate DWDM, WDM and SONET.
5 M
1 (b)
What is optical safety?
5 M
1 (c)
Differentiate LED and LASER sources.
5 M
1 (d)
Compare different types of splicing techniques.
5 M
2 (a)
Draw the block diagram of optical communication and state its advantages and disadvantages.
10 M
2 (b)
Explain different types of fibres with their refractive index profile and mention its dimensions.
5 M
2 (c)
A multimode GIF exhibits total pulse broadening of ms over a distance of 15 km.
Estimate:
i) The maximum possible Bandwidth on the link assuming no ISI.
ii) The pulse dispersion per unit length.
iii) The Bandwidth length product.
Estimate:
i) The maximum possible Bandwidth on the link assuming no ISI.
ii) The pulse dispersion per unit length.
iii) The Bandwidth length product.
5 M
3 (a)
What is macro-bending loss. Explain with neat diagram. Explain how to minimize micro-bending losses.
10 M
3 (b)
Explain OTDR with a neat sketch and mention its advantages and applications.
5 M
3 (c)
Derive an Expression for responsivity of PIN photodiode.
5 M
4 (a)
What are optical amplifiers. Explain different types of front end amplifiers.
7 M
4 (b)
Explain in detail working principle of RAPD. Why it is called reach through APD and compare its working with PIN diode.
8 M
4 (c)
Explain SONET architecture in detail.
5 M
5 (a)
Explain working principle of isolator with neat sketch. Also compare isolator and circulator.
10 M
5 (b)
Write a short note on link power budget.
10 M
6 (a)
Explain OTDM in detail.
10 M
6 (b)
Explain optical access networks.
10 M
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