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Fourier analysis plays a major role in the analysis and understanding of manyphenomena in physics and contemporary engineering. However, students, who haveoften discovered this notion through numerical tools, do not necessarilyunderstand all the richness that can be derived from joint analysis in thetemporal and spectral domains, particularly in the field of optics. As part ofthe second year of the Master's degree in Physics Lasers and Materials at theUniversity of Burgundy, we have set up a set of experiments to highlight theseconcepts and to show, on a non-trivial example of periodic phase modulation,the precautions to be taken in the interpretation of the various experimentallyaccessible spectra. This hands-on session, made possible through the use of theresearch infrastructure, is also an introduction to the use of standard opticaltelecommunications equipment.

Applications of sinusoidal phase modulation in temporal optics to highlight some properties of the Fourier transform