Characterization on fiber optic angle sensor based on real object: Aluminum and brass

An angled fiber-optic sensor´s using real object as reflective modulator is investigated and demonstrated. This paper reports two fibers optic sensors based on the angled-real object as reflective modulation. One is fiber-optic sensor with aluminum and the other is fiber-optic sensor with brass as the reflective medium. For aluminum, the highest sensitivity and resolution is obtained at 0.215 mV/° and 1.1 mrad, respectively. While, for brass as the real object, the highest sensitivity and is found to be 0.17 mV/° and the best resoluion at 0.8 mrad. This sensor suitable for industry or research activity for the simplicity of the design, high degree of sensitivity, dynamic range and the low cost of the fabrication.