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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 ...
Progressively monitorable fire alarm system
(United States. Patent and Trademark Office, 1991-02-19)
A method for producing reflectors in a continuous length of optical fiber is disclosed. The present process includes the steps of preparing the ends of two or more optical fibers, placing one or more of these fibers in a ...
Signal conditioning unit for fiber optic sensors
(United States. Patent and Trademark Office, 1996-09-17)
Apparatus and method (10, 50) for determining the value of a measurand measured by a fiber optic interferometer sensor (24, 72, 110) is provided. The apparatus includes a light source (16, 58, 102) emitting a light having ...
Calorimetric fiber optic chemical sensor
(United States. Patent and Trademark Office, 1992-10-20)
The present invention is directed to a sensor which utilizes an optical fiber interferometer to detect the absorption of a modulated laser beam by a particular chemical species. In particular, one embodiment of the present ...