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Dispersion measurements of fibres

Date Do, 28.05.2015 - Do, 28.05.2015
Time 11.15
Speaker Jos Kohn, Université de Fribourg and Institute of Applied Physics, University of Bern
Location Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern
Program The dispersion properties of a fibre are important for studying the signal transmission through fibres. I will present a method for chromatic dispersion measurements using a white light Mach Zehnder interferometer. Furthermore I propose a modified reference arm by superposing beams of different optical path lengths. This modification simplifies the dispersion measurement of high dispersion Fibre Bragg gratings. In addition I will present an outlook for a measurement method for determining the chromatic dispersion of short few mode fibres. The technique relies on ultrafast coincidence detection based on the up-conversion of energy-time entangled photons.
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Link www.iap.unibe.ch
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