Optical Systems and Networks

Course guarantor:

Leoš Boháč

Lecturer:

Leoš Boháč, Jiří Weiss

Tutor:

Leoš Boháč, Michal Lucki, Tomáš Straka, Jiří Weiss

Supervisor:

Department of Telecommunications Engineering

Synopsis:

The course deals with the use of optical radiation for the transmission of information. The aim is to acquaint students with the functions of important components used in an advanced optical communication systems and networks. Students will learn how to design practical optical fiber link and the network. Students will receive theoretical knowledge for the implementation of a all-optical photonic networks in the future, which will be based on a combination of wavelength multiplex with an all-optical switching.

Requirements:

basic knowledge of optics and communication networks

Syllabus of lectures:

1. Benefits of optical fiber technology. Factors influencing the development of FTTx technology.

2. Components and blocks of optical communication systems, CWDM and DWDM systems. FWM in systems with WDM.

3. Technical specification for Passive Optical Networks (PON) by ITU-T and IEEE.

4. Fiber's attenuation. Optical Time Domain Reflectometry method for testing optical paths.

5. Optical amplifiers: Erbium Doped Fiber Amplifier (EDFA), Raman amplifiers, Semiconductor Optical Amplifiers (SOA).

6. The problem of dispersion in optical fibers (chromatic dispersion, Polarization Mode Dispersion).

7. ITU-T recommendations for fiber optics (permittalbe attenuation, dispersion, modal regimes).

8. Manufacturing of optical fibers and cables, optical splices and connectors, fiber splicing.

9. Sources of optical radiation. Fabry-Perot laser, DFB laser, LED diode.

10. Photodetectors used in telecommunication systems. PIN diode. Spectral analyzer.

11. Modulation formats. MZI modulator. Optical couplers and filters gratings, all-optical interferometric switches.

12. Optical sensors and sensoric networks. Fiber-optic interferometric sensors.

13. Trends in optoelectronics. Special optical fibers: Photonic Crystal Fibers.

14. The summary for examination. Presentation of semestral projects.

Syllabus of tutorials:

1. Introduction to opto-electronic communications, safety in the laboratory, splitting into working groups

2. Theoretical preparation for slicing of optical fibers

3. Optical fiber splicing

4. Theory of fibers and the numerical aperture

5. Measuremnt of the numerical aperture of optical fibers

6. Theory and function of OTDR and methods of optical fiber attenuation measurement

7. Measurement of optical fiber attenuation using backscatter (OTDR)

8. Direct measurement method of optical fiber attenuation

9. Theory of optical amplifiers and principles of their measurement

10. Optical signal regeneration using optical amplifier

11. Theory of optical couplers and preparation for their measurements

12. Measurement of fundamental parameters of optical couplers

13. Test, credit

Study Objective:

Students will learn how to design practical optical fiber link and the network. Students will receive theoretical knowledge for the implementation of a all-optical photonic networks

Study materials:

BOHÁČ, Leoš, LUCKI, Michal. Optické komunikační systémy : přednášky. Miloš Schlitter, CSc. 1. vyd. Praha : ČVUT, 2010. 165 s. ISBN 978-80-01-04484-1.

R. Freeman:Fiber Optic Systems for Telecommunications, Wiley series in telecommunications and signal procesing, 2002, ISBN 0-471-41477-8

John M. Senior: Optical Communications Principles and Practise. Prentice Hall, 1992, ISBN 0-13-635426-2

Gagliardi, R. M. - Karp, S.: Optical Communications. John Wiley @ Sons, Inc., 1995, ISBN 0-12-471-54287-3

Kaminow, I. P. - Koch, T. L.: Optical Telecommunication III A. Academic Press, 1997, ISBN-0-12-395170-4

Kaminow, I. P. - Koch, T. L.: Optical Telecommunication III B. Academic Press, 1997, ISBN-0-12-395171-2

Note:

Further information:

https://moodle.fel.cvut.cz

Time-table for winter semester 2024/2025:

Time-table is not available yet

Time-table for summer semester 2024/2025:

	06:00–08:0008:00–10:0010:00–12:0012:00–14:0014:00–16:0016:00–18:0018:00–20:0020:00–22:0022:00–24:00
Mon
Tue
Wed	roomT2:B3-812a Lucki M. Weiss J. 14:30–17:45 (lecture parallel1) Dejvice roomT2:B3-812a Boháč L. Weiss J. 14:30–17:45 (lecture parallel1) Dejvice
Thu
Fri

The course is a part of the following study plans:

• Electronics and Communications - Photonics (compulsory course in the program)
• Electronics and Communications - Communication Networks and Internet (compulsory course in the program)