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- General information
- Teaching Staff
- Objectives
- Synopsis
- Grading policy
- Pre-requisites
- Timetable
- Texts
This course belongs to the group of courses on Telecommunication Systems
and Networks.
This series of lectures on optical fibre telecommunication systems is suitable for post-graduate students in telecommunications, particularly in optical communications.
Approximately 35 hours of lectures will be given.
The lectures will be given in English in the first semester.
- Prof. Adolfo Cartaxo: ext. 2476, email: adolfo.cartaxo@lx.it.pt
Optically amplified dispersion-compensated multi-wavelength systems
have become the new paradigm of optical fibre telecommunication systems.
To assess correctly the performance of such systems, it is necessary
to know the system structure, and rigorous modeling of the sub-systems
and accurate methods of performance analysis are required.
The main objective of this course is to provide the theoretical background
and fundamentals of rigorous modelling and methods necessary to design
modern optical fibre telecommunication systems.
1. Generating functions in telecommunications.
Definitions, properties, and bounds. Methods of bit error probability
computation: exact, bounds, and approximations.
2. Modelling and characterisation of optical receivers. Optical receivers without optical pre-amplification: marked and filtered Poisson process. Optically pre-amplified receivers: characterisation of optical amplifiers, squared and filtered additive Gaussian noise process and doubly stochastic Poisson process. Optical signalling and intersymbol interference.
3. Modelling and characterisation of optical transmitters. Characterisation of noise of optical sources. External modulation of optical sources. Advanced modulation formats.
4. Optical fibre transmission systems. Optical fibre transmission systems. Linear and non-linear transmission. Dispersion management schemes. Intra-channel nonlinear effects. Optical time division multiplexing and wavelength division multiplexing (WDM) systems. Optically amplified systems: linear and nonlinear transmission of optical amplifiers’ noise.
5. Crosstalk in WDM systems. Classification
of optical crosstalk. Nonlinear optical crosstalk in optically amplified
transmission systems: four-wave mixing, cross-phase modulation, and
stimulated Raman scattering. Characterisation and modelling of linear
optical crosstalk in optically amplified systems. Methods of performance
analysis.
Some topics on simulation and numerical issues will be discussed.
1. Three individual problem sets will be issued with specific due dates.
- Some of them may involve computer simulations and solutions using MATLAB.
- These will be graded and the grade on the problem sets will be 60% of the final grade.
- Late problem sets will be penalized.
- One of them can be substituted by an oral presentation
of a theme related with the discipline.
2. A final project (numerical simulation and/or computational work)
- The topic will be jointly selected by the student and the faculty.
- The total amount of time devoted to this final project should be no more than 2 weeks full-time equivalent.
- The final project grade will correspond to 40% of the final grade.
- The final project will be due by JANUARY 31, 2009.
THERE ARE NO OTHER EXAMS AND NO FINAL EXAMINATION
It will be assumed that the students had some prior exposure to:
1. Telecommunication Fundamentals
2. Optical Fiber Telecommunication Systems
3. MATLAB
There are no formal textbooks. The following material is very helpful and contains almost all of the subjects that will be presented.
• K. Cattermole, J. O’Reilly (Eds.), “Problems of randomness in communication engineering”, in “Mathematical topics in Telecommunications”, vol. 2, Pentech Press, 1984
• E. Iannone, F. Matera, A. Mecozzi, M. Settembre, “Nonlinear optical communication networks”, John Wiley & Sons, 1998
• G. Jacobsen, “Noise in digital
optical transmission systems”, Artech House, 1994
• I. Kaminow, Tingye Li (eds.),
“Optical fiber telecommunications IV”, Academic Press, 2003
• I. Monroy, E. Tangdiongga, “Crosstalk
in WDM communication networks”, Kluwer Acad. Publ., 2002
• Several papers of IEEE/OSA
Journal of Lightwave Technology.
Updated by Adolfo Cartaxo.