Compact laser sensors and monitoring systems including such sensors
US8520472B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2006 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Jan 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/344
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Improved laser sensors (10) employing doped laser crystals (24) for transducing output proportional to forces impinging upon the sensors. The disclosed sensors are compact, low powered and may be constructed relatively inexpensively from readily available materials. The disclosed sensors eliminate the need for costly, optical power-sapping fiber connections at the laser crystals. According to certain embodiments, the disclosed sensors are configured for local recovery of output signals using conventional digital telemetry. According to other embodiments, the sensors generate output through a dense wavelength division multiplexing (DWDM) laser (28), thereby allowing remote recovery without the need for frequency division multiplexing and issues involved with preloading the sensors to produce beat frequencies in unique bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.