Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-01-03
1991-09-10
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25023110, H01J 516
Patent
active
050476262
ABSTRACT:
A physical property of a liquid or of any optical fiber is measured using optical fiber interferometer. A conductive material is disposed upon the surface of a region of a light transmitting optical fiber and the region having the conductive material is disposed in the liquid. Light energy is applied to one end of the fiber and transmitted light is received at the other end of the fiber. Electrical energy is applied to the conductive material disposed upon the surface of the fiber to heat the region of the fiber and cause a change in the optical path length of the light transmitted through the fiber. The physical property of the liquid or optical fiber is determined in accordance with the change in the optical path length of the received light caused by applying the electrical energy to the conductive material. A series of short energy pulses is provided and the average phase change is determined. The conductive material is gold and it encircles the fiber. The gold may be disposed on the jacket of the fiber or the jacket may be removed before disposing the gold.
REFERENCES:
patent: 4530603 (1985-07-01), Shaw et al.
patent: 4563639 (1986-01-01), Langeac
patent: 4621929 (1986-11-01), Phillips
patent: 4627728 (1986-12-01), Willson
patent: 4929050 (1990-05-01), Wilson
Bobb Lloyd C.
Davis Jon P.
White Barbara J.
Allen Stephone
Bechtel James B.
Nelms David C.
The United States of America as represented by the Secretary of
Tura James V.
LandOfFree
Optical fiber sensor for measuring physical properties of liquid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical fiber sensor for measuring physical properties of liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fiber sensor for measuring physical properties of liquid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-541901