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1. WO2011000494 - OPTICAL SENSOR AND METHOD FOR DETECTING MOLECULES

Publication Number WO/2011/000494
Publication Date 06.01.2011
International Application No. PCT/EP2010/003784
International Filing Date 18.06.2010
IPC
G01N 21/77 2006.01
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 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
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 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
Applicants
  • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE]/[DE] (AllExceptUS)
  • HEIDRICH, Helmut [DE]/[DE] (UsOnly)
  • LÜTZOW, Peter [DE]/[DE] (UsOnly)
  • VENGHAUS, Herbert [DE]/[DE] (UsOnly)
  • HOEKSTRA, Hugo, Joseph, Wilhelmus, Maria [NL]/[NL] (UsOnly)
Inventors
  • HEIDRICH, Helmut
  • LÜTZOW, Peter
  • VENGHAUS, Herbert
  • HOEKSTRA, Hugo, Joseph, Wilhelmus, Maria
Agents
  • PFENNING, MEINIG & PARTNER
Priority Data
09075286.601.07.2009EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL SENSOR AND METHOD FOR DETECTING MOLECULES
(FR) DÉTECTEUR OPTIQUE ET PROCÉDÉ DE DÉTECTION DE MOLÉCULES
Abstract
(EN)
The invention relates to an optical sensor comprising an optical waveguide (1) and a light-sensitive element (4) for detecting light coupled out of the waveguide (1) and also various ring resonators (2), the ring resonators (2) being coupled optically to the mentioned waveguide (1) and, with the exception of at most one of the ring resonators (2), each having a means (5) for adjusting resonance frequencies of the respective ring resonator (2) and/or of the coupling between the ring resonator (2) and the waveguide (1) and at least two of the ring resonators (2) having different optical lengths in an initial state and being disposed for having their resonance frequencies influenced by means of different variables to be measured which are specific for each of these ring resonators (2). The invention refers furthermore to a method which can be implemented with a sensor of this type for detecting molecules of at least one substance.
(FR)
Cette invention concerne un détecteur optique qui comprend un guide d'onde optique (1) et un élément photosensible (4) pour détecter la lumière couplée sortant du guide d'onde (1) et qui comprend également divers résonateurs annulaires (2), lesdits résonateurs annulaires (2) étant optiquement couplés au guide d'onde (1) mentionné et étant caractérisés en ce que, à l'exception d'au plus un des résonateurs annulaires (2), chaque résonateur annulaire (2) dispose d'un moyen (5) pour ajuster les fréquences de résonance du résonateur annulaire (2) et/ou du couplage entre le résonateur annulaire (2) et le guide d'onde (1) respectif et en ce qu'au moins deux des résonateurs annulaires (2) ont des longueurs optiques différentes à l'état initial et sont agencés pour que leurs fréquences de résonance influencées au moyen de variables différentes soient mesurées, lesdites fréquences étant spécifiques pour chacun de ces résonateurs annulaires (2). Cette invention concerne, en outre, un procédé qui peut être mis en œuvre avec un détecteur de ce type pour détecter des molécules à base d'au moins une substance.
Also published as
Latest bibliographic data on file with the International Bureau