Integrating multi-waveguide sensor

G - Physics – 01 – N

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G01N 15/06 (2006.01) G01N 21/64 (2006.01) G01N 21/77 (2006.01)

Patent

CA 2375425

A waveguide-based sensing system includes a plurality of waveguides (16) secured within a waveguide holder (12). Each waveguide has a sensing surface (18) with attached analyte recognition elements. The end faces (22, 24) of the sensing surfaces are perpendicular (or at least approximately perpendicular) to the sensing surfaces. The sensing surfaces are directly excited by light (20) directed normal thereto and emit optical signals responsive to the presence of an analyte. These optical signals are coupled into waveguides. The optical signals travel along the length of the waveguides. The integrated optical signals emitted from the end surfaces of the fibers are then detected and analyzed.

L'invention concerne un système de détection à guides d'ondes comprenant une pluralité de guides (16) d'ondes fixés à l'intérieur d'un porte-guide d'ondes (12). Chaque guide d'onde comprend une surface (18) de détection munie de capteurs d'analyte. Les faces (22, 24) d'extrémité des surfaces de détection sont perpendiculaires (ou au moins sensiblement perpendiculaires) aux surfaces de détection. Les surfaces de détection sont directement excitées par la lumière (20) dirigée perpendiculairement à elles et émettent des signaux optiques en réaction à la présence d'une analyte. Ces signaux optiques sont couplés dans les guides d'ondes. Les signaux optiques se déplacent le long de la longueur des guides d'ondes. Les signaux optiques intégrés émis par les surfaces d'extrémité des fibres sont ensuite détectés et analysés.

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