Fibre optic distributed sensing

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United States of America Patent

PATENT NO 9739645
SERIAL NO

13509415

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Abstract

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A method of distributed fiber optic sensing is described in which an optical fiber (104) is interrogated with electromagnetic radiation; back-scattered radiation is detected; and the returns are processed to provide a measurement signal (310) for each of a plurality of longitudinal sensing portions of the optical fiber. The method comprises analyzing the measurement signals of a first subset of longitudinal sensing portions to provide a first zone (306a) having a first sensing function and analyzing the measurement signals of at least a second subset of longitudinal sensing portions to provide at least a second zone (306b) having a second, different, sensing function. The different sensing functions may include detecting different events of interest. In some embodiments the geometry of the fiber may provide different sensing zones (406a, 406b).

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Patent Owner(s)

Patent OwnerAddress
OPTASENSE HOLDINGS LIMITEDCODY TECHNOLOGY PARK IVELY ROAD FARNBOROUGH HAMPSHIRE GU14 OLX

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hill, David John Dorchester, GB 57 1079
McEwen-King, Magnus Hampshire, GB 24 779

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