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1. EP2270478 - Optical sensor and method for detecting molecules

Office European Patent Office
Application Number 09075286
Application Date 01.07.2009
Publication Number 2270478
Publication Date 05.01.2011
Publication Kind B1
IPC
G01N 21/77
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
77by observing the effect on a chemical indicator
CPC
G01N 21/7746
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
77by observing the effect on a chemical indicator
7703using reagent-clad optical fibres or optical waveguides
7746the waveguide coupled to a cavity resonator
G01N 21/39
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
39using tunable lasers
G01N 2021/1721
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
1717with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
1721Electromodulation
G01N 2021/1731
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
1717with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
1731Temperature modulation
G01N 2021/7779
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
77by observing the effect on a chemical indicator
7769Measurement method of reaction-produced change in sensor
7779interferometric
Applicants FRAUNHOFER GES FORSCHUNG
Inventors HEIDRICH HELMUT
LUETZOW PETER
VENGHAUS HERBERT
HOEKSTRA HUGO JOSEPH WILHELMUS MARIA
Designated States
Priority Data 09075286 01.07.2009 EP
Title
(DE) Optischer Sensor und Verfahren zum Detektieren von Molekülen
(EN) Optical sensor and method for detecting molecules
(FR) Capteur optique et procédé de détection de molécules
Abstract
(DE)
Die Erfindung betrifft einen optischen Sensor, der einen optischen Wellenleiter (1) und ein lichtempfindliches Element (4) zum Detektieren von aus dem Wellenleiter (1) ausgekoppeltem Licht sowie mehrere Ringresonatoren (2) aufweist, wobei die Ringresonatoren (2) optisch mit dem genannten Wellenleiter (1) gekoppelt sind und mit Ausnahme höchstens eines der Ringresonatoren (2) jeweils eine Einrichtung (5) zum Verstellen von Resonanzfrequenzen des jeweiligen Ringresonators (2) und/oder einer Kopplung zwischen dem Ringresonator (2) und dem Wellenleiter (1) aufweisen und wobei mindestens zwei der Ringresonatoren (2) in einem Grundzustand unterschiedliche optische Längen haben und eingerichtet sind zum Beeinflussen ihrer Resonanzfrequenzen durch verschiedene, für jeden dieser Ringresonatoren (2) jeweils spezifische Messgrößen. Die Erfindung betrifft ferner ein mit einem derartigen Sensor durchführbares Verfahren zum Detektieren von Molekülen mindestens eines Stoffes.

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