Variable coupler fiberoptic sensor
US4634858A · kind A · utility
134Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1984 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Oct 17, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3131
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A variable coupler fiberoptic sensor in which a fused, tapered, biconical directional fiberoptic coupler is encapsulated in a stress birefringent medium whose index of refraction changes with applied stress. The ratio of power in the output fibers of the directional coupler varies with the change of index of refraction of the encapsulating medium as stress is applied to the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.