Photoinscribed bragg grating sensor with a good signal-to-noise ratio
US5724371A · kind A · utility
8Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Feb 1, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a high capacity, high signal-to-noise ratio sensor incorporating an array of Bragg grating transducers photoinscribed on a dielectric guide and a feedback loop incorporating a wavelength selective element which is time modulated making it possible to obtain a laser sensor selectively switched by each Bragg grating. Application to monitoring strains or temperatures in a structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.