Experimental study of the mechanical vibrations in an interferometric fiber-optic sensor installed in a medium power transformer

Interferometric fiber-optic sensing is used for monitoring the vibrations inside a medium-power transformer. Disturbances are present in the measurement, mainly associated to mechanical transduction to the accessing path cords and to the interrogation scheme. Mechanical vibrations other than of interest are characterized and an optoelectronic and processing scheme is proposed to avoid them.