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US 2010/0150496 A1Published application
Optical Chemical Detector and Method
AssigneeOctrolix BV
InventorsRene Gerrit Heideman, Ronald Dekker
Life of this patent
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Abstract
An apparatus and method for optically detecting the presence of an analyte in a solution is presented. An embodiment comprises a waveguide resonator that is optically coupled to a fluid in a fluidic conduit so that the resonant wavelength of the waveguide resonator is based on the refractive index of the fluid.
Claims23
1-29. (canceled)
A sensor comprising:
- a substrate comprising a flow channel for conveying a fluid, wherein the flow channel comprises a first region;
- and
- a first optically resonant element that is located within the first region, wherein the first optically resonant element is optically resonant for a first spectral component when the fluid in the first region has a first refractive index, and wherein the first optically resonant element is optically resonant for a second spectral component when the fluid in the first region has a second refractive index.
A sensor for detecting an analyte in a fluid comprising:
- a substrate comprising a flow channel for providing the fluid at a first region;
- and
- a first waveguide resonator comprising a first optically resonant element and a first bus waveguide, wherein the first optically resonant element is located within the first region, and wherein the first optically resonant element and the fluid are optically coupled at the first region;
- wherein the first waveguide resonator is dimensioned and arranged to receive a first light signal and provide a second light signal that is based on the first light signal, and further wherein the second light signal has a first intensity when the fluid is analyte-free and a second intensity when the fluid comprises the analyte.
1 more element
A method for detecting an analyte in a fluid comprising:
- providing a first waveguide resonator, wherein the first waveguide resonator comprises a first optically resonant element that is located within the first region, and wherein the first optically resonant element and the fluid are optically coupled at the first region such that the first optically resonant element is optically resonant at a first wavelength when the fluid in the first region is analyte-free and optically resonant at a second wavelength when the fluid in the first region comprises an analyte;
- receiving a first light signal at the first waveguide resonator;
- and
- receiving a second light signal from the first waveguide resonator, wherein the second light signal has a first intensity when the fluid in the first region is analyte-free and a second intensity when the fluid in the first region comprises an analyte.
1 more element
Dependencies are inferred from the claim text.