Optical sensor for determining changes in a dimension and/or a temperature of an object
US5009505A · kind A · utility
31Cited by
1References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1989 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Jun 28, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor comprises a resonator loop formed of polarization-maintaining, high birefringent optical fibre. Changes in the optical path lengths of each of the "fast" and "slow" optical paths in the loop are measured and processed to determine the strain and temperature change experienced by said fibre loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.