Resumen
Self-referenced fiber optic sensor for liquid detection and/or liquid level measurement. Self-referenced plastic fiber optic sensor for detecting liquid and/or liquid level measurement, comprising an emitter system configured to generate an optical signal, and a power meter receiver system comprising at least two simultaneous inputs, comprising a coupler comprising two sections of optical fiber that are arranged in opposition to a critical radius of curvature rc, having eliminated the protective cover and partially eliminated the core in a coupling area between said two sections of optical fiber, which are separated by a liquid with a refractive index n, so that a coupling constant k of the sensor depends on said refractive index n, which makes it possible to detect the presence of said liquid, as well as its level. (Machine-translation by Google Translate, not legally binding)