Linear and steplike characteristics in an optical fiber refractometric transducer with hemispherical detection element

摘要: We present the results of a theoretical numerical analysis transmission characteristics fiber optic refractometric transducer with hemispherical glass detection element. In this transducer, internal reflection light from element's spherical surface depends on refractive index surrounding medium. examine effects transducer's geometrical and optical parameters its function, nonlinearity, sensitivity to show that through proper choice material parameters, it is possible obtain function any necessary span over wide interval medium (from n = 1.0 1.7), modify form linear one steplike in virtually same device. This permits us use proposed for two contrasting applications: assessing index, discriminating between liquids or air liquid, as liquids, level measurement, etc. addition, adjust input range particular fluid (or fluids) interest.