Optical Networks

A tantárgy neve magyarul / Name of the subject in Hungarian: Optikai hálózatok

Last updated: 2013. április 26.

Budapest University of Technology and Economics
Faculty of Electrical Engineering and Informatics

Electrical Engineering, MSc

Infocommunication systems

Course ID Semester Assessment Credit Tantárgyfélév
VITMM347 3 2/1/0/v 4  
3. Course coordinator and department Dr. Maliosz Markosz,
4. Instructors




Markosz Maliosz, PhD  

assistant professor


Géza Paksy

invited lecturer


5. Required knowledge

Basics in telecommunications and computer networks.

6. Pre-requisites
NEM ( TárgyEredmény( "BMEVITMMA12" , "jegy" , _ ) >= 2
TárgyEredmény("BMEVITMMA12", "FELVETEL", AktualisFelev()) > 0)

A fenti forma a Neptun sajátja, ezen technikai okokból nem változtattunk.

A kötelező előtanulmányi rendek grafikus formában itt láthatók.


There is no such requirement / subject.
No credit points are given for students who have credit points from the "Optical communications and optical networks" MSc elective subject.

7. Objectives, learning outcomes and obtained knowledge Students will learn the architecture of state of the art optical fiber based telecommunications systems, its features and design principles. The critical features of optical telecommunications equipment and networks are presented together with the design methods used in optical networks. The main areas of application are backbone, metro and access networks capable of providing IP-based broadband services. In these networks next generation optical services can be provisioned, on which new applications can be built. These require new solutions, algorithms from the control and management plane, and from the network operation point of view; the goal is to demonstrate these innovations for the students.
8. Synopsis

Physical layer:
Optical transmission system and components I
Optical fibers: Types and characteristics. Optical active and passive components: transmitters, modulators, optical receivers, multiplexers. Modulation and coding. Signal / noise ratio, error rate, Q-factor.

Optical transmission system and components II.
Optical telecommunications network architecture, components, physical parameters. Power balance, dispersion, noise, optical amplifier chains, attenuation and dispersion-limited systems. Optical interference modeling, simulation.

Network layer:
Optical networks architecture and network elements
DWDM (Dense Wavelength Division Multiplexing), CWDM (Coarse WDM) devices and architecture, Building networks with OADM (Optical Add-Drop Multiplexer), ROADM (Reconfigurable OADM), OXC (Optical Cross Connect), MROADM (Multi-degree ROADM), 1-10-100 GigabitEthernet systems

Evolution of optical networks. Switched Optical Network techniques: OBS (Optical Burst Switching), OPS (Optical Packet Switching). Pure optical networks and components: OTDM (Optical Time Domain Multiplexing), 3R regeneration (Optical signal retiming, reshaping, and reamplifying), wavelength conversion. Design, operating and service provisioning challenges.

Broadband Optical Access Networks and Systems I
Broadband subscriber services. Active and passive optical network systems. GPON (Gigabit Passive Optical Network) operating principle, network elements, physical archtecture, network topologies, comparison with competing technologies.

Broadband Optical Access Networks and Systems II
Dynamic bandwidth management, support for broadband services. Network Design considerations: dimensioning principles, GPON network protection. Further evolution areas: 10GPON, WDM PON.

Measurement techniques, measurement information processing, measurement and monitoring solutions to the provided services
OTDR (Optical Time Domain Reflectometer), dispersion, noise measurements. Measurable parameters of the optical and electrical layers. Usage of the measured parameters in different network architectures, for ensuring quality of services guarantees.

Transmission technologies, transport network architectures, multi-layer networks I
SONET / SDH (Synchronous Optical Networking / Synchronous Digital Hierarchy), MPLS (Multiprotocol Label Switching), ngSDH / SONET (next generation SDH / SONET), OTN (Optical Transport Network)

Transmission technologies, transport network architectures, multi-layer networks II.
GMPLS (Generalized MPLS), dynamically switched optical networks, ASON (Automatically Switched Optical Network), routing, multiplexing, grooming

Transmission technologies, transport network architectures, multi-layer networks III.
The role of management and control plane, GMPLS protocol suite, neighbor discovery, routing, signaling, resource management, RWA (Routing and Wavelength Assignment).

Network Protection
Fault management, different error protection schemes, dedicated and shared protection solutions, protection methods in meshed and ring topology networks.

Service provider’s environment, trends
Description of services, categories. Hungarian and international environment, development of optical backbone networks, operators and service provider relations, national and regional providers, multimedia convergence.

Financial and economic aspects of network provisioning
CAPEX (Capital Expenditures), OPEX (Operational Expenditures), cost modeling. Network operation and network management processes, costs. Effects of the introduction of GMPLS.

9. Method of instruction

Two hours of classroom lecture weekly and two hours of classroom practice every two weeks.The lectures are complemented by practical case studies and design examples on classroom practices.

10. Assessment a. During the semester: one mid-term exam, at least with grade 2, to get signature.  The result does not count into the final exam.
b. In the examination period: written exam
c. Pre-exam: a written examination; condition: at least grade 3 for the mid-term exam

11. Recaps

Failed or missed mid-term exam can be repeated once in the supplemental period.

12. Consultations

On demand consultation after the lessons, or by appointment.

13. References, textbooks and resources

·         G. P. Agrawal: Lightwave Technology: Telecommunications Systems, Wiley-Interscience,  2005, ISBN-13: 978-0471215721

·         G. Bernstein, B. Rajagopalan and D. Saha, Optical Network Control: Architecture, Protocols, and Standards,  Addison-Wesley Professional, 2003, ISBN-13: 978-0201753011

·        Slides of the lectures.

14. Required learning hours and assignment
Kontakt óra (lectures)
Félévközi készülés órákra (Preparation for lectures)26
Felkészülés zárthelyire (Preparation for mid-term exam)
Házi feladat elkészítése (Home work)
Kijelölt írásos tananyag elsajátítása (Learning from appointed written course material)
Vizsgafelkészülés (Preaparation for the final exam)
Összesen (Sum)
15. Syllabus prepared by

Géza Paksy

invited lecturer


Markosz Maliosz, PhD

assistant professor


Szilárd Zsigmond