Sapphire optical fiber interferometer
US5381229A · kind A · utility
38Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1992 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Aug 31, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/3206
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical interferometer comprises a multi-mode sapphire fiber as a high temperature sensor. One end of the sapphire fiber is coupled to a silica fiber and, in turn, to the sapphire fiber. The sapphire fiber sensor produces reference and sensor reflections that produce optical fringes at the output of a detector coupled to the silica optical fiber via an opto-coupler. The optical fringes are related to displacements of the sensor which, in turn, can provide an indirect measurement of pressure, strain or temperature of the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.