Planar waveguide based grating device and spectrometer for species-specific wavelength detection
US7324195B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2005 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jul 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6484
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Planar waveguide based grating devices and spectrometers, for species-specific wavelength detection for example, are disclosed. A planar waveguide spectrometer apparatus may have a microfluidic channel or compartment microfabricated integrally with a planar waveguide or hybrid assembled with the planar waveguide and optically coupled thereto. The planar waveguide may also include a thin planar substrate which is made of a transparent waveguiding optical material and has a planar multilayer, one or more input waveguides, a waveguide-based spectrometer, and one or more output waveguides integrally formed thereon. An apparatus which incorporates a planar waveguide, a diffractive construct for diffracting light through the planar waveguide onto a curved image surface, and a plurality of output waveguides emanating from the curved image surface at locations selected to extract predetermined wavelengths or wavelength ranges, is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.