Integrated optics based high-resolution spectrophotometer
US7403284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Mar 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/12019
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrophotometer capable of high spectral resolution (e.g., in the GHz range) is presented. The spectrophotometer includes a container for holding a sample, an arrayed-waveguide grating coupled to the sample holder, and a detector array coupled to the arrayed-waveguide grating. The arrayed-waveguide grating may be a monolithic chip, and the container may be integrated into the chip. An integrated container may be a microfluidic channel formed through the layers in the chip and positioned in such a way that light is transferable from the microfluidic channel to the waveguides of the arrayed-waveguide grating.The invention is also a method of making the spectrophotometer. The method entails providing an arrayed-waveguide grating having an input end and an output end, coupling a container to the input end, wherein the container is capable of holding a sample, and coupling a detector array to the output end of the arrayed-waveguide grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.