Distributed, spatially resolving optical fiber strain gauge
US4806012A · kind A · utility
81Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Nov 19, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/35383
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A distributed, spatially resolving optical fiber strain gauge in which the core of the optical fiber is written with periodic grating patterns effective for transmitting and reflecting light injected into the core. Spectral shifts in the transmitted and reflected light indicate the intensity of strain or temperature variations at positions of the grating corresponding to the associated wavelengths of injected light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.