EE4010A
Fibre Optics
3
4
Pre-requisite: EE3008A or EIE331
1. To introduce to students the physical laws that govern the behaviour of fibre-optics components.
2. To give students an understanding of the principles of fibre-optic sensing and optical fibre communications.
3. To equip students with the knowledge to design simple fibre-optics sensor systems.
Upon completion of the subject, students will be able to: a. Appreciate recent developments in fibre optic communication systems. b. Appreciate the important of fibre optics technology to the development of communications and fibre-optic sensors. c. Appreciate the effect of attenuation and dispersion of optical fibres to the performance of a fibre optic system. d. Apply fibre optic sensors for temperature and strain measurement. e. Select the most appropriate passive and active fibre-optic components for fibre-optic sensor systems and fibre optic communication links. f. Use the appropriate fibre-optic equipment/instrument to perform optical power and spectrum measurements. g. Have had hands-on experience in the use fusion splicer to make low-loss fibre joints. h. Appreciate the engineering applications of fibre-optics technologies. i. Appreciate the importance of optical fibre communications from a historical perspective. j. Interpret the physical meaning and phenomena behind mathematical equations and computed results.
1. Overview : Introduction to the significance of fibre optics for electrical engineering.
Summary of applications in high-field environments.
2. Optical fibres : Propagation theory. Wave-guiding. Fibre types. Optical loss. Fibre dispersion. Mechanical properties. Special fibres. Fibre-optic cables and cable design examples.
3. Fibre optic connections : Coupling losses. Splices. Connectors. Coupling devices and techniques. Distribution systems. Devices for wavelength-division-multiplexing.
4. Fibre optic test methods : Power measurements. Fibre loss and dispersion measurements.
Optical time-domain reflectometry. Reliability.
5. Optical sources for fibres : Wavelength considerations. Emitter materials. Light-emittingdiodes. Laser diodes. Emitter lifetime.
6. Optical detectors for fibres : Photo-detectors: noise, response time, materials. PIN and avalanche photodiodes. Receivers.
7. Optical modulation : Modulation of LED and laser diodes. Drive circuits. Formats for digital modulation. Direct and coherent transmission systems. Noise and error mechanisms. Receiver sensitivity and circuit design.
8. Optical fibre sensors : Extrinsic, evanescent, intrinsic sensors. Optical components for fibre sensor systems. Power transmission, actuation and safety aspects of design.
Applications.
9. Fibre optic systems design : Fibre optic communication system design considerations.
Attenuation and dispersion budgets. Digital system design.
AI - 93
10. Applications of fibre optics in electrical engineering : Optical groundwire. Enhancing power system telecommunications and control with overhead and underground fibre optic cables. Fibre optic sensors for measuring voltage, current, temperature. Location of cable faults by using optical fibre sensing.
Laboratory Experiments/Demonstrations:
Insertion loss measurement of optical fibres using optical power meters and optical spectrum analyzers
Optical spectrum analyzer for spectral measurements of light sources
Fibre Bragg grating sensors
Lectures, quizzes, tests, laboratory experiments, mini-projects, and examination.
Teaching/Learning Methodology Outcomes a b c d e f g h i j
Lectures
Tutorials
Experiments/Demonstration
Specific assessment methods/tasks
% weighting Intended subject learning outcomes to be assessed a b c d e f g h i j
2%
28%
5% 3. Laboratory experiment report
Total
5%
60%
100%
This subject introduces the physical laws that govern the behaviour of optical fibres, semiconductor light sources and detectors, and how to employ them to design simple fibreoptics sensor systems. The outcomes are assessed by quizzes, tests, mini-projects, laboratory experiments and examination.
Class contact:
ƒ
ƒ
Other student study effort:
ƒ
ƒ
Total student study effort 105 Hrs.
Reference books:
1. J.M. Senior, Optical Fiber Communications-Principles and Practice, 3 nd
Edition, Prentice
Hall, 2008
2. J.C. Palais, Fiber Optic Communications, 5 th
3. G. Keiser, Optical Fiber Communications, 3
Edition, Prentice Hall, 2005 rd
Edition, McGraw-Hill, 1999
4. G.P. Agrawal, Fiber-optic Communication Systems, Wiley, 1993
AI - 94