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Fiber Optics apparatus and method for accurate current sensing
(United States. Patent and Trademark Office, 1997-12-09)
A fiber optics sensor (10) and method for attaining accurate measurement are provided. A polarization maintaining optic fiber (22) forms a linear optical path. An optical element (24) is used to convert linearly polarized ...
Method and apparatus for measuring pressure with embedded non-intrusive fiber optics
(United States. Patent and Trademark Office, 1995-09-19)
A method and apparatus is provided for measuring pressure in a pressure containing vessel with a non-intrusive, metal-embedded fiber optic pressure sensor. The pressure containing vessel may, for example, be the combustion ...
Method and apparatus for measuring pressure with fiber optics
(United States. Patent and Trademark Office, 1998-02-03)
A method and apparatus are provided for measuring pressure in a combustion chamber of an internal combustion engine is provided with a non-intrusive, metal-embedded fiber optic pressure sensor. A Fabry-Perot Interferometer ...
Fiber optics apparatus and method for accurate current sensing
(United States. Patent and Trademark Office, 1999-11-16)
The fiber optics sensor includes a polarization maintaining optic fiber forming an optical loop, and a sensing medium coupled to the optic fiber and disposed generally midway in the optical loop. First and second quarter ...