FIBER OPTICS AND INTEGRATED OPTICS
Lecture: 2 hrs/week during winter term for Graduate Students of Electrical Engineering,
recommended for students specializing in Instrumentation and Control.
Professor: Dr. rer. nat. Reinhard Ulrich
'Vordiplom' in Electrical Engineering;
Lectures: 'Theory of Electrical Engineering', 'Transmission Line Theory', 'Systems Theory'
Goal: General description of optical waves guided in fibers, planar and stripe waveguides.
Fundamentals, materials, techniques, and applications in instrumentation and signal processing.
Examination: oral, by appointment.
- Technical significance of fiber optics and integrated optics; historical development; comparison with
competing technologies for communication, instrumentation, and signal processing .
- Optical waveguides: wave equation, boundary conditions, dielectric waveguides, index profiles,
ray-optical description of wave propagation: ray-tracing; wave-optical description: fields, modes;
1- and 2-dimensional confinement: planar guides, fibers; role of polarization.
- Power flow in optical waveguides: coupling into and out of waveguides through the ends: ray- and
wave-optical treatment, near field, far field, numerical aperture NA, modal fields, power density,
orthogonality of modal fields, attenuation by absorption, scattering, and curvature.
- Optical fibers: cross-sections, index profiles, materials, fabrication, typical properties, fiber cables;
connecting fibers by splicing, by connectors; monomode- and multimode fibers: polarization and
birefringence, polarization-maintaining fibers.
- Waveguides of integrated optics: planar and stripe waveguides; general concepts, material classes: glass,
LiNbO3, polymers, semiconductors; methods of fabrication: deposition, diffusion, ion exchange,
lithography; characterization, typical properties.
- Components of/for fiber optics: light sources: LEDs, lasers, SLDs; detectors; directional couplers,
prinicple of operation, construction, multiplexers, N x N couplers, spectral filters, polarizers, fiber
amplifiers, fiber lasers.
- Components of integrated optics: passive components: branching filters, directional couplers, reflectors,
Bragg gratings, polarizers; active components: lasers, modulators, switches, nonlinear devices.
- Fiber-optical transmission of optical power and optical images: through fiber bundles for illumination,
through single fibers: laser surgery, fiber optical actuators; image transmission by coherent bundles.
- Fiber optical sensors using fibers for signal transmission: modulation, encoding, and decoding of
measurands; digital and analog optical sensors, spectral encoding, time/frequency encoding sensors.
- Fiber optical sensor systems, sensor networks, hybrid electronic/optical sensors, distributed sensors:
thermometer, 'smart skin' sensors, sensor networks.
- Intrinsic fiber optical sensors: using fibers as transducing element: fiber optical interferometers,
hydrophon, magnetometer, Faraday current sensor, Sagnac interferometer: fiber gyro
FOICMENG 11.10.97 RU