Autumn Semester 2020 takes place in a mixed form of online and classroom teaching.
Please read the published information on the individual courses carefully.

Juerg Leuthold: Catalogue data in Autumn Semester 2016

Name Prof. Dr. Juerg Leuthold
FieldPhotonics and Communication
Professur Photonik u. Kommunikat.
ETH Zürich, ETZ K 81
Gloriastrasse 35
8092 Zürich
Telephone+41 44 633 80 10
DepartmentInformation Technology and Electrical Engineering
RelationshipFull Professor

227-0301-00LOptical Communication Fundamentals6 credits2V + 1U + 1PJ. Leuthold
AbstractThe path of an analog signal in the transmitter to the digital world in a communication link and back to the analog world at the receiver is discussed. The lecture covers the fundamentals of all important optical and optoelectronic components in a fiber communication system. This includes the transmitter, the fiber channel and the receiver with the electronic digital signal processing elements.
ObjectiveAn in-depth understanding on how information is transmitted from source to destination. Also the mathematical framework to describe the important elements will be passed on. Students attending the lecture will further get engaged in critical discussion on societal, economical and environmental aspects related to the on-going exponential growth in the field of communications.
Content* Chapter 1: Introduction: Analog/Digital conversion, The communication channel, Shannon channel capacity, Capacity requirements.

* Chapter 2: The Transmitter: Components of a transmitter, Lasers, The spectrum of a signal, Optical modulators, Modulation formats.

* Chapter 3: The Optical Fiber Channel: Geometrical optics, The wave equations in a fiber, Fiber modes, Fiber propagation, Fiber losses, Nonlinear effects in a fiber.

* Chapter 4: The Receiver: Photodiodes, Receiver noise, Detector schemes (direct detection, coherent detection), Bit-error ratios and error estimations.

* Chapter 5: Digital Signal Processing Techniques: Digital signal processing in a coherent receiver, Error detection teqchniques, Error correction coding.

* Chapter 6: Pulse Shaping and Multiplexing Techniques: WDM/FDM, TDM, OFDM, Nyquist Multiplexing, OCDMA.

* Chapter 7: Optical Amplifiers : Semiconductor Optical Amplifiers, Erbium Doped Fiber Amplifiers, Raman Amplifiers.
Lecture notesLecture notes are handed out.
LiteratureGovind P. Agrawal; "Fiber-Optic Communication Systems"; Wiley, 2010
Prerequisites / NoticeFundamentals of Electromagnetic Fields & Bachelor Lectures on Physics.
227-0955-00LSeminar in Electromagnetics, Photonics and Terahertz Information 3 credits2KJ. Leuthold
AbstractSelected topics of the current research activities at the IEF and closely related institutions are discussed.
ObjectiveHave an overview on the research activities of the IEF institute.
227-1101-00LHow to Write Scientific Texts in Engineering Sciences
Strongly recommended prerequisite for Semester Projects and Master Theses at D-ITET (MSc BME, MSc EEIT, MSc EST).
0 creditsJ. Leuthold
AbstractThe 4 hour lecture covers the basics of writing & presenting a scientific text. The focus will be on the structure and elements of a scientific text and not on the language. Citation rules, good practice of scientific writing and an overview on software tools will be part of the training.
The lecture will be thought on two afternoons. Some exercises will be built into the lecture.
ObjectiveKnowledge on structure and content of a scientific text. The course further is arranged to stimulate a discussion on how to properly write a legible scientific text versus writing an interesting novel. We will further discuss the practice of properly citing and critically reflect on recent plagiarism allegations.
Content* Topic 1: Structure of a Scientific Text (The Title, the author list, the abstract, State-of-the Art, the "in this paper" paragraph, the scientific part, the summary, Equations, Figures).

* Topic 2: Power Point Presentations.

* Topic 3: Citation Rules and Citation Software.

* Topic 4: Guidelines for Research Integrity.
LiteratureETH "Citation Etiquette", see

ETH Guidlines on "Guidelines for Research Integrity", see > Education > > Contacts, links & documents > Forms and documents > Brochures / guides.
Prerequisites / NoticeStudents should already have a Bachelor degree and plan to do either a semester project or a master thesis in the immediate future.
227-2037-00LPhysical Modelling and Simulation Information 5 credits4GC. Hafner, J. Leuthold, J. Smajic
AbstractThis module consists of (a) an introduction to fundamental equations of electromagnetics, mechanics and heat transfer, (b) a detailed overview of numerical methods for field simulations, and (c) practical examples solved in form of small projects.
ObjectiveBasic knowledge of the fundamental equations and effects of electromagnetics, mechanics, and heat transfer. Knowledge of the main concepts of numerical methods for physical modelling and simulation. Ability (a) to develop own simple field simulation programs, (b) to select an appropriate field solver for a given problem, (c) to perform field simulations, (d) to evaluate the obtained results, and (e) to interactively improve the models until sufficiently accurate results are obtained.
ContentThe module begins with an introduction to the fundamental equations and effects of electromagnetics, mechanics, and heat transfer. After the introduction follows a detailed overview of the available numerical methods for solving electromagnetic, thermal and mechanical boundary value problems. This part of the course contains a general introduction into numerical methods, differential and integral forms, linear equation systems, Finite Difference Method (FDM), Boundary Element Method (BEM), Method of Moments (MoM), Multiple Multipole Program (MMP) and Finite Element Method (FEM). The theoretical part of the course finishes with a presentation of multiphysics simulations through several practical examples of HF-engineering such as coupled electromagnetic-mechanical and electromagnetic-thermal analysis of MEMS.
In the second part of the course the students will work in small groups on practical simulation problems. For solving practical problems the students can develop and use own simulation programs or chose an appropriate commercial field solver for their specific problem. This practical simulation work of the students is supervised by the lecturers.
401-5870-00LSeminar in Electromagnetics for CSE Information 4 credits2SC. Hafner, J. Leuthold
AbstractVarious topics of electromagnetics, including electromagnetic theory, computational electromagnetics, electromagnetic wave propagation, applications from statics to optics. Traditional problems such as antennas, electromagnetic scattering, waveguides, resonators, etc. as well as modern topics such as photonic crystals, metamaterials, plasmonics, etc. are considered.
ObjectiveKnowledge of the fundamentals of electromagnetic theory, development and application of numerical methods for solving Maxwell equations, analysis and optimal design of electromagnetic structures