Title: Introduction to Optical Fiber Communications
Coordinator: Heba Yüksel, Assistant Professor of Electrical & Electronics Engineering
Goals: The purpose of this course is to introduce the basic principles of optical fiber communications systems and provide the student with a basic physical understanding of lightwave systems and optical components, single and multi-mode optical fibers, pin and APD detectors, receiver sensitivity modulation formats, system performance, bit-error-rate, power budget, network architecture and apply noise analysis.
At the end of this course, students will be able to:
1. Apply ray and wave theory to planar slab and cylindrical waveguides.
2. Measure the performance of optical communication systems.
3. Apply noise and error calculations of optical receivers
4. Present understanding of the basic device principles of photodetectors and calculate the Quantum efficiency and responsivity.
5. Analyze attenuation and dispersion in fibers.
6. Present understanding of TDM, WDM and DWDM systems, multiplexers, filters, Bragg gratings, Fabry-perot filters.
7. Present understanding of the device physics, performance and applications of Optical Amplifiers.
8. Present awareness of DFB and DBR lasers, transmitters and receivers, Optical Networks, SONET/SDH, nonlinear effects, Network topologies, wavelength conversion and switches.
Textbook: Optical Fiber Communications, Gerd Keiser, 3rd Edition, McGraw-Hill, 2000. http://www.mhhe.com/engcs/electrical/keiser/
• “Fiber-Optic Communication Systems”, Govind P. Agrawal.
• “Optical Fiber Communication Systems”, L. Kazovsky, S. Benedetto, and A. Willner, Artech House, 1996.
• “Optical Communication Systems”, John Gowar, Prentice-Hall, Second Edition, 1993.
• “Fiber Optic Networks”, Paul Green, Prentice-Hall, 1993.
• “Fiber Optics Communications” Harold Kolimbiris. Pearson, Prentice-Hall 2004
• “Fiber Optic Communications” Joseph Palais, 4th ed. Prentice Hall 1998
• “Optical Fiber Communications: Principles and Practice”. John M. Senior. Prentice-Hall on International Series in Optoelectronics, 2nd Ed., 1992
• “Principles of Lightwave Communications”, Göran Einarsson, John Wiley, 1996
Prerequisites by Topic: EE 363 Electromagnetic Field Theory
1. Introduction, historical perspective.
2. Basic optical principles, optical fibers and waveguides, practical issues of fiber design and fabrication. There will be a detailed discussion of both the ray and wave theory of planar slab and cylindrical waveguides. Multimode and single-mode fibers, V-number.
3. Attenuation and dispersion in fibers. Modal, material, waveguide and polarization mode dispersion. Calculation of waveguide dispersion curves. Effects of dispersion on pulse broadening and maximum bit-rate. Solitons and dispersion management.
4. Optical sources, lasers and LEDs. A discussion of device physics, brightness, spectral properties. Optical amplifiers, saturation and noise. Residual intensity noise of optical sources. Gaussian beams.
5. Coupling to fibers, connectors. Gaussian beam models of coupling.
6. Photodectors. Device physics of PMTs, APDs, and p-i-n photodiodes. Quantum efficiency and responsivity.
7. Optical receivers, noise, errors. Calculation of NEP and D*, brandwidth, bit-error-rate.
8. Digital optical communication links, coding.
9. Analog systems, coherent detection.
10. WDM, DWDM, multiplexers, filters, Bragg gratings, Fabry-perot filters.
11. Optical Amplifiers. Device physics, performance and applications.
12. Optical Networks, SONET/SDH, nonlinear effects, Network topologies, wavelength conversion, switches.
Computer Resources: The class project will require computer analysis and graphical results presentation. I encourage the use of softwares such as Mathcad, Mathematica, or Matlab for this purpose.
Laboratory Resources: Computer lab.
Course Structure: The class meets for two lectures a week, one consisting of two 50-minute sessions and the other, just one 50-minute session.
1st Midterm ................... (20%)
2nd Midterm ................... (20%)
Final Exam ...................(40%)
Class Project ...................(20%)
• An ability to apply knowledge of mathematics, science, and engineering. Fundamentals of Electromagnetic field theory will be used throughout the course.
• An ability to identify, formulate and solve engineering problem. The midterms and final exams are closed -book closed-notes, so the students should have the ability to identify the parameters and equations learned in class for solving the problems given in the midterms and final exams. There will also be a class project involving optical communication system analysis as in receiver noise calculations which involves formulating and solving real-life engineering problems.
• Communicate effectively. Students are taught to use the correct terminology to formulate, analyze and communicate an engineering problem related with optical communication systems analysis. They will also be required to present their project within the course.
• A recognition of the need for, and an ability to engage in life-long learning. Throughout the course, the latest trends in the optical communication technology is shown and presented as an application to the classical theory presented in class.
• Use of modern engineering tools. Students are encouraged to use Mathcad, Mathematica, or Matlab simulation tools for describing and analyzing optical components and systems. These tools will be particularly useful for the students to use within their class project.
Prepared By: Heba Yüksel