Patent ID: 9453799
Filing Date: 2016-09-27
CPC Classification: G01N

Claim Text:
1. An optical fluorescence-based sensor comprising at least one sensing element, the at least one sensing element comprising a waveguide, the waveguide comprising: a waveguide core formed in a substrate; a light source integrated into the waveguide on the substrate, the light source optically coupled to an input part of the waveguide core; and a photodetector integrated into the waveguide on the substrate, the photodetector optically coupled to an output part of the waveguide core, the waveguide core being made of a material comprising a mixture of an optical material and a fluorescent dye, wherein the fluorescent dye has an excitation spectrum and an emission spectrum, the emission spectrum depending on the presence of an analyte to be detected, wherein the light source is selected such that it emits light in a first wavelength range overlapping at least partly with the excitation spectrum of the fluorescent dye, and wherein the photodetector is selected such that it is sensitive in a wavelength range corresponding to the emission spectrum of the fluorescent dye.