Optical communications are integral to modern digital society, as the only technology capable of handling large amounts of data over long distances, upon which networks rely. Moreover, the continual development of new online services requires sustaining an ever-increasing traffic capacity, which runs squarely into information-theory transmission limits and an uncontrolled energy consumption both. This course is supported by teaching and research groups renowned worldwide, in topics from Fundamental Physics to Information Theory through Computer Science and Networks.
The expertise in optical solutions acquired by our students is in demand not only in the Information Technology industry and academic research institutes, but translates to other applications as well in the health industry, bioscience, energy, fabrication technologies, environment, and many others.
We aim to train engineers and researchers who can meet these challenges: design optical communication systems suited to given constraints and required applications; design cross-layer optical network architectures, from the physical layer to higher network layers; select optical components according to their performances among current and future solutions; and design the photonic devices needed for optical data processing and transport in future networks.
Location
PALAISEAU
Course Prerequisites
The training is aimed at students who have already completed their first year of Master's M1 (60 ECTS) or equivalent in such fields as: electrical engineering, physics, communication systems engineering, etc.
Skills
Create knowledge built on a scientific approach.
Analyse and design the operation of an optical communications system with the requisite scientific rigour.
Contribute to the development of a project in a multi-disciplinary environment combining physics, optics, advanced signal processing, incroporating notions of information theory, communication networks, etc.
Use conceptual, methodological, numerical, technical and practical knowledge and skills for modelling and solving problems in physics or engineering, or straddling both disciplines.
Be able to analyse a scientific article or presentation and grasp its underlying issues as well as its limits.
Career prospects
The skills acquired in optical solutions enable students not only to respond to major challenges in the field of information technologies, but also to address other applications related to the health, biosciences and energy sectors, manufacturing technologies, the environment, and so on.
Collaboration(s)
Laboratories
Laboratoire Charles Fabry
Centre de Nanosciences et de Nanotechnologies
Laboratoire des Signaux et Systèmes.
Laboratoire Traitement et Communication de l'Information
Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux.
Programme
* Refresher: 2 elective courses to be chosen (2*2 ECTS)
* Core courses: all courses are mandatory (23 ECTS)
* Electives: 1 course to be chosen (3 ECTS).
Philippe Ciblat, Professor, TELECOM Paris
Antoine O. Berthet, Professor, CentraleSupélec
Frédéric Lehmann, Assistant professor, TELECOM SudParis
Ghaya Rekaya-Ben Othman, Professor, TELECOM Paris
Hadi Gauch, TELECOM Paris.
Objectifs pédagogiques visés :
Contenu :
Course Objectives:
The objective of this refresher course is to provide the fundamentals tools of digital communications in the simplest case given by the Additive White Gaussian Noise channel.
Syllabus
• Additive White Gaussian Noise (AWGN) model
• Detection theory : MAP and ML detector
• Matched filter, Threshold detector
• Inter-Symbol Interference (ISI), Nyquist criterion
• Bit error rate, minimal distance, performance
• Block Forward Error Correcting codes (FEC), Coding gain.
Prerequisites :
• Introduction to digital communications (modulation BPSK, threshold detector)
• Introduction to statistics (random variable, random stationary process).
Bibliographie :
D. Tse, “Fundamentals of wireless communications”.
A. Goldsmith, “Wireless communications”.
J. Proakis, “Digital communications”.
Advanced and Next-Generation Optical Transmission Systems
Language(s) of instruction :
AN
ECTS :
2
Détail du volume horaire :
Lecture :18
Practical class :12
Modalités d'organisation et de suivi :
Coordinator :
Pedagogical team :
Yann Frignac, Associate professor, TELECOM SudParis
Zeno Toffano, Associate professor, CentraleSupélec
Mansoor Yousefi, Associate professor, TELECOM Paris.
Objectifs pédagogiques visés :
Contenu :
Course Objectives:
Know the technologies that will supply extreme capacity demand while having the best energy efficiency. Advanced amplification techniques, future spatial multiplexing techniques, design and application of specialty fibers, tunable capacity transmitters and receivers. Acquire the ability of modeling transmission systems.
Syllabus:
• Chapter 1 : Spatially multiplexed transmission systems
Multicore and multimode fibers. Spatial multiplexer and EDFA technologies, MCF and FMF transmission systems. Coherent DSP technique adaptations. Cost per bit reduction and energy saving. Spatial and spectral information density.
• Chapter 2 : Advanced amplification schemes
Raman amplification. Parametric and Phase sensitive amplification. Semiconductor Optical Amplifiers (SOA).
• Chapter 3 : Next generation fibers
FMF and MCF fiber for coupled or uncoupled SDM transmissions. Design and applications of Photonic Bandgap Fibers.
• Chapter 4 : Elastic transmitter and receivers
Bit-rate adaptation for capacity demand, network routing constraints or energy saving. Superchannel concepts.
• Chapter 5 : Transmission systems modeling
Optical transmission system simulation project.
Prerequisites :
• Optical information propagation and point-to-point transmission system (M2 module)
• Matlab programming.
• Spatial and Fourier optics.
Ghaya Rekaya-Ben Othman, Professor, TELECOM Paris
Hadi Gauch, TELECOM Paris
Mansoor Yousefi, TELECOM Paris.
Objectifs pédagogiques visés :
Contenu :
Course Objectives:
The objectives of the course are to introduce the main solutions coming from digital communications and signal processing to improve the quality of the optical fiber based transmission.
Syllabus:
• Optical fiber model (CD, PMP, PDL, PDM, nonlinearity based Volterra series) with a digital communications point-of-view, Differences with wireless links
• Fundamental limits thorugh information theory tools: Shannon capacity and interpretation
• Detection theory (MAP, ML)
• Intersymbol interference mitigation
– Viterbi algorithm
– Linear and nonlinear equalization (ZF, MMSE, DFE) and application to optical fiber.
– What can you do with Channel State Information at the Transmitter (CSIT): predistorsion.
– OFDM and related detection
• Nonlinear processing based on inverse Volterra series and receiver architecture
• MIMO processing and polar-time coding
– Blind equalization (CMA) : block and adaptive version
– Polar-time coding and related metrics (rate, etc)
– Alamouti code, Blast, Golden code and related performance, code design criterion
– Multi-mode, multi-core based communications
– Modulation and Coding Scheme selection with CSIT or partial side information
• Frequency and Phase synchronization.
Prerequisites :
• Refresher course on digital communications
• Course on point-to-point optical transmission systems (propagation part).
Bibliographie :
D. Tse, “Fundamentals of wireless communications”.
A. Goldsmith, “Wireless communications”.
J. Proakis, “Digital communications”.
Error-Correcting Codes and Coded Modulations Applied to Optical Communications
Language(s) of instruction :
AN
ECTS :
2
Détail du volume horaire :
Lecture :15
Practical class :3
Modalités d'organisation et de suivi :
Coordinator :
Pedagogical team :
Frederic Lehmann, Associate professor, TELECOM SudParis
Antoine O. Berthet, Professor, CentraleSupélec.
Objectifs pédagogiques visés :
Contenu :
Course Objectives:
- Understand the basics of algebraic coding and decoding
- Understand the basics of modern coding theory and the associated probabilistic decoding
- Comprehend the performance evaluation techniques of error correcting codes
Syllabus
Chapter 1: Introduction to algebraic coding and finite fields (3h - lecture)
Chapter 2: Finite fields
Chapter 3: Algebraic codes and their decoding
Chapter 4: Factor graphs and the sum-product algorithm
Chapter 6: Performance analysis of LDPC codes.
Prerequisites :
M1 level course in Information Theory
M1 level course in Digital Communications.
Bibliographie :
- D.J.C. McKay, Information theory, inference and learning algorithms, Cambridge University Press, 2003.
- C. Heegard, S.B. Wicker, Turbo coding, Kluwer Academic Publishing, 1999.
- B. Vucetic, Turbo codes : principles and applications, Kluwer Academic Pu.
Optical Information Propagation and Point-to-Point Transmission Systems
Language(s) of instruction :
AN
ECTS :
3
Détail du volume horaire :
Lecture :18
Practical class :18
Modalités d'organisation et de suivi :
Coordinator :
Pedagogical team :
Yann Frignac, Associate professor, TELECOM SudParis
Yves Jaouën, Professor, TELECOM Paris
Zeno Toffano, Associate professor, CentraleSupélec
Renaud Gabet, Associate professor, TELECOM Paris.
Objectifs pédagogiques visés :
Contenu :
Course Objectives:
From a capacity, distance and cost need, know how to design an adequate point-to-point transmission system, using high spectral efficiency modulation formats and counteracting long-haul optical propagation impairments.
Syllabus :
• Chapter 1 : Overview of an optical transmission system setup
• Chapter 2 : Transmitter and Receiver design
• Chapter 3 : Optical propagation in fibers
• Chapter 4 : Transverse view on new optical coherent transmission systems.
Prerequisites :
• Waveguide optics, fibre optics and propagation modes.
• Light polarization, Jones, Stokes and Poincaré’s sphere, optical propagation in anisotropic media.
• Devices for photonic systems : laser, modulators, mux, photoreceivers, optical amplification and filters.
• Digital communication, Additive White Gaussian Noise channel , Nyquist criterium, pulse shaping and match filtering, complex modulation formats and Bit Error Probability estimations.
Bibliographie :
• Govind, P. Agrawal,"Nonlinear Fiber Optics", 4th edition, Academic Press, 2006.
• Govind, P. Agrawal,"Fiber Optic Systems", Academic Press, 2002.
• Ivan Kaminow et al., "Optical fiber communication", IIIA, IIIB, IVA, IVB, VA, VB, VIA, VIB, Academic
Press, from 1988 to 2013.
• Irene and Michel Joindot, "Les Télécommunications par fibres optiques", Dunod, 1996.
• Zeno Toffano, "Optoélectronique : composants photoniques et fibres optiques", Ellipses.
Abstract
This course illustrates the diversity of photonic system applications. The course will be based on optical labworks (18h) and short courses/conferences dedicated to various applications (12h).
Syllabus
Optical Labworks contents:
- Optical Time Domain Reflectometry
- Optical Fiber Gyrometer
- Slow and Fast Line in optical Fiber
- Nonlinear optics : Second Harmonic Generation, Raman Scatering in an optical Fiber Short courses and Conferences (indicative list ):
- Photonic crystal fibers
- LiFi Technology
- Advanced signal processing for sensor applications
- Optical sensors technology
- ….
The objective of this module is to train students in the fields of nanophotonics and its applications through the study of the properties of light propagation in nanostructured environments as well as the benefits from nanostructures for optoelectronics.
Outline:
- Photonic integrated circuits
Properties of light waves
Guiding, photonic integrated circuits : building blocs
Example of application : silicon photonics
II - Propagation of light in nanostructured environments
Photonic crystals
Plasmonics
Metamaterial
III - Photonics active devices
Nanostructures for optoelectronics (quantum well, quantum dots, nanowires).
Prerequisites :
Basic knowledge of electromagnetism and semiconductor device physics.
Henri BENISTY (IOGS)
Mme Béatrice Dagens (IEF,CNRS)
M. Guang Hua DUAN (III?V Lab)
M. Daniel DOLFI (Thales TRT).
Procedure and organisation :
1) Couplages d’ondes, dispositifs emblématiques (H. Benisty) :
Rappel des descriptions de couplage d’onde et de semi-conducteur. Application de ces concept au travers de dispositifs emblématiques (QW laser,DFB, VCSEL,QD laser).
2) le cycle performance – technologie des composants télécoms (Béatrice Dagens, IEF)
Détail des composants individuels puis intégrés: laser à semi-conducteur ; autres technologies de composants optoélectroniques (verre, SOI, LiNbO3) ; bioplasmonique.
3) Composants télécom et datacom : tendances émergentes : (Guang-Hua DUAN, 3-5Lab)
Nouvelles tendances dans le domaine de télécommunications: multiplexage ; routage en longueur d’onde ; nouveaux formats de modulation ; intégration photonique sur silicium.
4) Traitement du signal électro- et acousto-optique, applications micro-ondes et lidar (D.Dolfi -TRT Thales)
- Phénomènes électro et acousto-optiques et applications.
- Propriétés optiques et électro-optiques des cristaux liquides, et applications.
- Liaisons électro-optiques.
Objectifs pédagogiques visés :
Contenu :
Objectifs du cours:
Expliciter les principes de fonctionnement et les technologies des dispositifs photoniques semiconducteurs, dans une perspective d’intégration. On s’appuiera d’abord sur un cas mature, les télécoms optiques pour les réseaux actuels puis on verra les tendances émergentes prochainement déployées. On donne dans la fin du cours les méthodes de traitement du signal par voie électro-optique et acousto-optique, telles qu’elles sont utilisées au-delà des télécom en photonique micro-onde et dans les lidars.
A l’issue du cours, les élèves peuvent identifier au sein des dispositifs de l’optique intégrée courants à l’état de l’art les différentes briques de base, et dans chaque brique (confinement, réseau périodiques, boites quantiques), de comprendre pourquoi la valeur en proposée des paramètres a été au final adoptée.
Prerequisites :
Diode laser de base (Fabry-Perot), milieux à gain et électro-optiques, bases des télécoms optiques (fibres, modes, débit).
Ouvrage "Fundamentals of Photonics" de B.A. Saleh & M.C. Teich (Wiley) (2nd Ed : 2007).
Bibliographie :
- The principles of nonlinear optics, Y.R. Shen (Wiley-Interscience)
- Wave Mechanics applied to semiconductor heterostructures, G.Bastard (Springer) –
- Quantum semiconductor Structures : Fundamentals and applications, C. Weisbuch & B. Vinter (Acadeic Pr.
