Double resonance interrogation of grating-coupled waveguides
US7582486B2 · kind B2 · utility
5Cited by
8References
12Claims
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Key dates
| Filing date | Jun 18, 2007 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Apr 24, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/805
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for using a double resonance effect within a grating-coupled waveguide (GCW) sensor, as generated from a light beam with a given span of wavelengths or angles, is provided. The method can be used for label-independent detection of biological and chemical agents, to interrogate biological-binding events or chemical reactions within a sensing region at increased sensitivity, and with decreased sensitivity to environmental perturbations. Also described is an optical interrogation system incorporating the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.