04763009 is referenced by 9 patents and cites 8 patents.

The invention relates to a method and to apparatus for remotely measuring the distribution of a physico-chemical parameter in a medium. The method consists in exciting measurement points (20) situated in a medium (17) in succession via an optical fiber (18), with each point (20) being excited by two light pulses of different wavelengths offset from each other in time occurring simultaneously at said point, each measurement point returning radiation at a third wavelength representative of the temperature of the measurement point. The apparatus includes two lasers (3, 4) emitting different wavelengths, a delay circuit (5) for delaying the light pulse from one (4) of the two lasers, and the measurement points include a material sensitive to biphotonic excitation.

Title
Method and apparatus for remotely measuring the distribution of a physico-chemical parameter in a medium
Application Number
7/8896
Publication Number
4763009
Application Date
January 30, 1987
Publication Date
August 9, 1988
Inventor
Andre Tardy
Egly
FR
Jean Robieux
Chatenay Malabry
FR
Herve Fevrier
Massy
FR
Agent
Sughrue Mion Zinn Macpeak and Seas
Assignee
Compagnie Generale D Electricite
FR
IPC
G01N 21/64
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