Fiber optic flow meter
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United States of America Patent
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Feb 28, 2006
Grant Date -
Jul 7, 2005
app pub date -
Jan 3, 2005
filing date -
Jan 2, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A metering module, or a system employing such, for monitoring fluid flow with a laser light source, a light detector and a processor, wherein the fluid may be a gas or liquid. A valve section and a grating section including a fiber Bragg grating (FBG) are provided. The valve section applies strain on the FBG that is representative of the flow of the fluid. An optical fiber couples a probing laser signal to the FBG and the FBG reflects a portion back as a return laser signal that the optical fiber couples to the light detector for detection and processing.
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