Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers
US5291032A · kind A · utility
22Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1993 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | May 11, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/907
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber evanescent wave fuel sensor, employing a light source with a wavelength selected to be at the strong infrared absorption lines of the fuel, typically hydrocarbons. The amount of light leaking from the optical fiber is an exponential function of the length of the fiber in the liquid, and is independent of the relative indices of refraction of the fuel and fiber cladding material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.