Optical waveguides – Optical waveguide sensor – Including physical deformation or movement of waveguide
Patent
1993-02-05
1995-07-04
Healy, Brian
Optical waveguides
Optical waveguide sensor
Including physical deformation or movement of waveguide
385 12, 385140, 385147, 25022711, 25022714, 25022716, 25022725, 73 73, 73800, G02B 600, H01J 516, G01N 502
Patent
active
054308151
ABSTRACT:
An optical fiber water sensor includes a mandrel having a convex or concave shape adjacent to an optical fiber which is adjacent to a water swellable material held in a reservoir. Upon coming in contact with water, the material swells and deforms a section of the optical fiber about a contour defined by the mandrel thus attenuating a signal propagating through the fiber which is detected by an optical detector to indicate the presence of water.
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Horsma David A.
Kulkarni Narendra
Moisson Marc F.
Shen Nelson M.
Burkard Herbert G.
Healy Brian
Raychem Corporation
Zavell A. Stephen
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