Optical Communication Systems

Lecturer:

Tutor:

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 advanced optical communications 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:

Final examination + assessment.

Conditions for credits:

participation in the final exercise - the make-up measurement in the case of acceptable excuse, as agreed with the teacher, preparation of a report on measurements

Examination:

Exam will be carried out in a form of a rated test with a maximum of 30 points. The valid credit is prerequisite for an exam. Evaluation is of 100 % Exam.

Syllabus of lectures:

1. Benefits of optical fiber technology, comparison optical and metallic lines. Economical factors influencing the development of FTTx technology.

The problem of fiber's attenuation

2. Components and blocks of optical communication systems, CWDM and DWDM systems, Optical Transport Hierarchy (OTH) and access networks

3. Wave propagation in optical fibers (Total Internal Reflection, Modified Total Internal Reflection, Photonic Band Gap). ITU-T recommendations (attenuation, dispersion, modal regimes, Numerical Aperture, fiber's geometry)

4. Design of optical fibers and systems (I): 3R-regeneration, dispersion compensation (chromatic dispersion, Polarization Mode Dispersion)

5. Design of optical fibers and systems (II): optical amplifiers: Erbium Doped Fiber Amplifier (EDFA), Raman amplifiers, semiconductor optical amplifiers (SOA)

6. Microstructured fibers (I): Index Guiding Photonic Crystal Fibers, Hollow Core Photonic Crystal Fibers

7. Microstructured fibers (II): Highly Nonlinear PCFs. The problem of fiber bending, optimization of propagation losses

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

9. Optical couplers and filters (Bragg filter, Mach Zehnder filter), optical demultiplexer AWG, insulators, polarization controllers, microstructured planar bending structures and all-optical interferometric switches

10. Optical sources and photodetectors - parameters and usage

11. Optical systems in practice, actual problems in the area of fiber optics and nanotechnologies

12. Basic measurements in fiber optic technology

13. The summary for the examination

Syllabus of tutorials:

Final exercise: safety regulations, Fusing of optical fibers by fiber splicing kit, Measurements of Numerical Aperture of optical fibers, Measurements of attenuation of optical fiber by using OTDR method, Regeneration of optical signal by using an optical EDFA amplifier, Measurements of basic parameters of passive optical couplers, credits

Study Objective:

Students will learn how to design telecommunication optical devices

Study materials:

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:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Telecommunications and Radio-engineering - Telecommunications- structured studies (compulsory course)