Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Vladislav Reimer

Wolfgang Schade

Eike Hübner

An optical sensor has a substrate with first and second sides, one side being provided with first and second waveguides. The first and second waveguides have respective first and second measuring points along their respective lengths, each measuring point includes at least one interruption. The first measuring point, which belongs to the first waveguide, is functionalized by at least one coating while the second measuring point, which belongs to the second waveguide, is not functionalized by that same coating. The functionalized coating may include a substance (e.g., antibody) which corresponds to a pathogenic germ. A light source may simultaneously direct light into both waveguides and a light detector may simultaneously detect light signals exiting the waveguides. Differences in light intensities of the received light signals at one or more wavelengths, may reveal the presence of a pathogenic germ in a liquid sample applied to the first and second measurement points.

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FREIBURG, Germany

Vladislav Reimer