Dual-parameter optical waveguide grating sensing device and sensor
US6833541B2 · kind B2 · utility
3Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Sep 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02204
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the present invention an optical waveguide grating sensing device for a dual-parameter optical waveguide grating sensor includes a first optical waveguide grating of a first resonant wavelength provided in a first section of an optical waveguide and a second optical waveguide grating of a second resonant wavelength provided in a second of an optical waveguide. The first and second gratings have different coefficients of rate of change of wavelength as a function of temperature and have substantially the same coefficient of rate of change of wavelength as a function of stain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.