This work deals with the research on the compaction behaviour of continuous fibre tows by the method of light section sensing. When continuous fibre tows are loaded by an axial force, which occurs within the production process of parts, e.g. the pultrusion process or the filament winding process, the filaments of the fibre tow are oriented in axial direction of the fibre tow. This results in less free space between the single filaments and in an increase of the fibre volume fraction. In the end, the produced part should have a high fibre volume fraction. If the fibre volume fraction is high during the impregnation process, the matrix is hindered to impregnate the fibre tow completely. It is harder for the resin to imbed all the filaments, the impregnation process takes a longer time. To describe the compaction behaviour, a lot of different dynamic and static experiments have been done in this work. Beside the effect of the strain itself on the compaction behaviour, also the effect of the loading rate, the force application, the pulling speed, the set-up parameters of the used devices, the time frame for the measurement, the behaviour of cyclic loading and the form of the fibre bundles during the loading were investigated. At the first step a Matlab script was written to process the data of the fibre bundle measured by the light section sensor and to deliver useable data to calculate the cross section and the fibre volume fraction of the fibre tow. In the next step it was possible to print charts "average stress by fibre volume fraction". It was shown that the drawn curves follow the descriptions in the literature, but due to a different methode of measurement they are not compareable directly to the literature.