Optical fiber sensor utilizing a swellable detector material
US5757988A · kind A · utility
4Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/2925
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber sensor for inducing a microbend in an optical fiber in the presence of a detectable fluid such as water includes a chamber with an expansible block located therein. When water enters the chamber, the block expands in a particular direction to move a pusher bar which, in turn, moves a puller wire to bend the fiber at a location remote from the chamber. A gap may initially be provided between the expansible block and the pusher bar so that the presence of water vapor within the chamber will not move the pusher bar but the presence of liquid water will.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.