Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1993-05-11
1994-03-01
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250907, 25022721, 340619, G01N 1506
Patent
active
052910326
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.
REFERENCES:
patent: 4287427 (1991-09-01), Scifres
patent: 5005005 (1991-04-01), Brossia et al.
patent: 5058420 (1991-10-01), Vali et al.
patent: 5077482 (1991-12-01), Vali et al.
Chang David B.
Lawrence Albert F.
Shih I-Fu
Vali Victor
Denson-Low W. K.
Grunebach Georgann S.
Gudmestad Terje
Hughes Aircraft Company
Nelms David C.
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