CU7103 Optical Networks M.E Question Bank : valliammai.co.in

Name of the College : Valliammai Engineering College
University : Anna University
Department : Electronics and Communication Engineering
Subject Code/Name : CU7103 Optical Networks
Degree : M.E Communication Systems
Year : I
Semester : I
Document Type : Question Bank
Website : valliammai.co.in

Download : https://www.pdfquestion.in/uploads/va…20Networks.pdf

Valliammai Optical Networks Question Bank

Unit – I

Optical System Components:
Part A :

Related : Valliammai Engineering College CU7102 Advanced Digital Communication Techniques M.E Question Bank : www.pdfquestion.in/2786.html

1.Mention the advantages and disadvantages of optical communication.
2.What is the need for couplers and isolators?
3.Draw a block diagram of a fiber communication system.
4.What are the different loss components in optical fibers?
5.What are Solitons? What is their advantage?
6.What is wavelength converter?
7.Why is erbium used in EDFA?
8.What phenomenon determines the bandwidth of an EDFA
9.What is the function of coupler?
10.Name and describe two major classes of filters

11.What are the basic characteristics of a filter?
12.What are the factors that determine the transmission distance in optical fibers?
13.Explain the function of circulators and isolators.
14.Enumerate the features and applications of Solitons.
15.What are three functional types of optical amplifier?
16.What is Crosstalk in SOA?
17.What is FP filter?
18.Describe the functions of core and cladding in an optical fiber. Why their refractive indexes are different? Which one has to be greater and why?
19.What does the term ‘State of Polarization’, mean?
20.Define extinction ratio.

Part B :
1.i) Define and explain Numerical aperture and TIR
ii) Discuss the functions of the following optical components.
(a) Three port circulator, ii) Electro-optical directional coupler.
2.i) Explain the characteristics of EDFA optical amplifier. Derive its gain expression.
ii) Explain how stimulation emission occurs in an EDFA
3.i) Discuss in detail, the main categories of nonlinear effects that occur In opticalcommunication systems.
ii) Explain the advantages of optical amplifier over regenerators.
4.Describe in detail, the principle of operation of an Erbium doped fiber amplifier.
5.Explain the fabrication of a simple 2×2 fiber optic coupler with a neat diagram. Derive its coupling lengt
6.Explain how wavelength conversion can be used in fiber networks.
7.List the major Causes of Attenuation in an optical fiber & explain their mechanism in detail about light propagation in a fiber?
8.Explain the principle of operation of a semiconductor optical amplifier (SOA)? Show the structure of an EDFA & Explain the function of each component
9.What is the function & the principle of operation of an isolator and circulator? Give example of isolator and circulators Applications.
10.Explain the features and applications of optical amplifiers and Optical switches
11.Explain the principle of operation of Fabry Perot (FP) filter and Mach Zehnder Interferometer (MZI)?
12.Explain the function & the Principle of operation of Wavelength Converters?

Unit-II

Optical Network Architectures :
Part A :
1. Specify the Protection architectures of SONET.
2. List any 2 features of shufflenet multihop Network.
3. Compare single hop and multihop network.
4. Name any 2 routing techniques in optical communication networks.
5. Draw the basic building blocks of WDM approach.
6. What is the significance of WDM in optical networks?
7. Mention advantages of WDM. what are their types?
8. List the different topologies used in optical networks.
9. What is a optical add/drop multiplexer?
10. What are the services provided by the optical layer?
11. What are the functions of a routing node?
12. Define Broadcast and select Network?
13. Define MAN and WDM.
14. Define SONET/SDH
15. Why do we need to develop WDM fiber optic network?
16. Why is WDM the major trend in Fiber optic network?
17. Define static and reconfigurable networks.
18. Define Lambda net.
19. What are the constraints for wavelength assignment?
20. What is the difference between MAN and WAN

Part B :
1. Explain the advantages of SONET and SDH standards used in optical networks.
2. Describe the frame structure and network configurations defined for SONET and SDH with diagrams.
3. Discuss the main features and mode of operation of broadcast and select networks.Discuss the design issues
4. With neat diagram, explain the elements of SONET infrastructure.
5. Explain the optical network layered architecture with a diagram
6.
Explain the factors that limit the through put in the broadcast and select networks, indetail
7. Explain in detail Network management and Protection architectures of SDH.
8. Explain the SONET format with neat diagram.
9. Explain the types of WDM in detail.
10. Explain briefly the test beds for Broadcast and select WDM networks
11. Distinguish 1) MAN from WAN 2) MAN from LAN
12. Explain the differences between FDM and WDM.