EEC136 - Opto-Electronics And Fiber

3 units - Spring Quarter

Lecture: 1 hour

Discussion: 1 hour

Laboratory: 3 hours

Prerequisites: Courses 135 and 150A.

Grading: Letter

Catalog Description:Characteristics and applications of state-of-the-art optoelectronic components (semiconductor detectors, optical modulators and optical fibers), and fiber-optic communication systems.

Relationship to Outcomes:
Students who have successfully completed this course should:

Course Outcomes Program Outcomes
Understand the basic principles of operation of photodetectors, semiconductor lasers and fiber-optic wave-guides and both passive and active wave-guide devices. 1a, 1b
Have done hands-on laboratory characterization of opto-electronic devices. Signal, noise, and dispersion characterization and application of CAD tools for prediction of BER arising from physical layer impairments including noise and dispersion. 2a, 2b
Have done a hands-on laboratory in optical techniques. 2a, 2b
Understand optical and electronic amplification of high-speed signals. Experimental signal-to-noise ratio and bit-error rate analysis. 2a, 2b
Understand experimental design and analysis of optical point-to-point communications links. 2a, 2b
Be able to apply fiber optic communications principles to experimental design of links subject to cost constraints as well as link performance requirements. Group design project. Group progress evaluation. Written and oral reports. 3a, 3b, 4a,4b, 4c, 6a

Expanded Course Description:

  1. Photodetectors
    1. Principles of photodetection
    2. Noise in photodetection (thermal noise, shot noise, signal-to-noise ratio, error rates)
    3. Photoreceiver architectures and photodectors (photovoltaic, photoconductive and transimpedance biasing)
  2. Semiconductor lasers
    1. Intensity vs. current characteristics
    2. Noise spectrum
    3. Distributed feedback (DFB) semiconductor laser
    4. Optical spectrum of DFB lasers, Fabry-Perot lasers and Light Emitting Diodes
    5. Transversal and longitudinal modes of semiconductor lasers
    6. Feedback effectsin semiconductor lasers
  3. Optical fibers
    1. Waveguides and fiber principles
    2. Fiber modes (step-index, graded index, single-mode and multi-mode fibers).
    3. Attenuation, distortion, non-linearity in optical fibers
    4. Fiber components (couplers, connectors, splices, directional couplers)
    5. Laser-to-fiber coupling (beam alignmnet andsensitivity of coupling).
    6. Fiber amplifiers
  4. Fiber-optic communication
    1. Digital fiber-optic links
    2. Modulation formats
    3. Bit-error-rate
    4. Eye Diagrams and Bit Patters
    5. Fiber-optic networks
    6. Wavelength-Division-Multiplexed (WDM) networks
    7. Transmitter and Receiver Designs and Testing
    8. Fiber transmission and characterization

Textbook: G. Keiser, Optical Fiber Communications, McGraw-Hill

An introduction to Fiber Optic Systems, second edition, John Powers, Irwin, 1997
Fiber Optic Networks, Paul E. Green Jr., Prentice Hall, New Jersey, 1993.

Engineering Design Statement:
Approximately 60% of the laboratory experiments are open-ended design problems. During the first six weeks of the course, the students carry out laboratory experiments for which the objectives and some of the procedures are specified in the course laboratory manual. The manual does not, however, cover the procedure in detail, and the students will have to design their own optical systems and mechanical set-ups to carry out the measurements. During this part of the course, about 33% of the work is design. During the last 4 weeks of the course, the students will carry out and report on an optical communication or measurement experiment of their own design. This part of the course is entirely design oriented. The assigned homework has a balance of design and analysis that is similar to that of the laboratory work. Roughly 60% of the homework will involve design of electrooptic and fiberoptic devices and systems. These problems are open-ended problems without correct answers.

Professional Component: Engineering Depth
Engineering Science: 1 unit
Engineering Design: 2 units

Updated: 6/06