Optical waveguides – Optical waveguide sensor
Patent
1996-07-25
1998-01-27
Palmer, Phan T. H.
Optical waveguides
Optical waveguide sensor
385 13, 385123, 25033911, 356133, G02B 600
Patent
active
057129347
ABSTRACT:
There is disclosed an optical sensor comprising a light source, light detector and signal generator, and an optical fiber extending between the light source and detector. The optical fiber includes a sensing length comprising a return bend in the fiber, where the return bend has a bend radius less than or equal to 2.5 times the radius of the optical fiber. In one embodiment, the sensing length further includes a planar sensing surface. A method for detecting the presence of a medium in an environment using the optical sensor of the invention is also disclosed.
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