A digital level transducer based on optical fiber

摘要

The paper proposes a digital level transducer based on an opticalfiber from which the cladding was removed in n zones at a fixed distanceone from each other. A theoretical analysis of the propagation in such amodified fiber was carried out, highlighting the good potentiality ofthe proposed sensor. A 1 m full scale, 25 mm resolution prototype wasthen designed, using the results of a numerical simulation, andrealized, optimizing both the sensitive element and the conditioninghardware. The static and dynamic characterization tests carried out showhigh repeatability, good accuracy, and acceptable dynamic performance