The idea of mixing optical and magnetic properties in an only device has
been the seed of this MSc Thesis. As a result of all the work done a Magneticallyactuated
Variable Optical Attenuator (M-VOA) has been developed. Ferrofluid and
poly(Dimethylsiloxane) (PDMS) are the raw and unique material needed for the
manufacturing of the M-VOA. The experimental results of the precalibation of the Hall
probe and the output voltage in function of the distance between the magnet and the MVOA’s are shown in this MSc Thesis and they are in agreement with the theory.