OPTICAL FIBER MOISTURE SENSOR

An optical fiber moisture sensor includes an optical fiber coated with a thin film of plasma polymerized hexamethyldisiloxane and ammonia, 1-2 mu m thick. The light transmission characteristics of such a coated optical fiber changes as a function of moisture conditions in an environment to which the...

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Bibliographic Details
Main Authors SADHIR, RAJENDER KUMAR, PEBLER, ALFRED RUDOLF, PETERSON, STEVE HAROLD, PEARCE, HENRY ALEXANDER JR, CAIBORNE, C.CLAIR
Format Patent
LanguageEnglish
Published 05.12.1990
Edition4
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
TESTING
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Summary:An optical fiber moisture sensor includes an optical fiber coated with a thin film of plasma polymerized hexamethyldisiloxane and ammonia, 1-2 mu m thick. The light transmission characteristics of such a coated optical fiber changes as a function of moisture conditions in an environment to which the coating is exposed. Accordingly, the coated optical fiber may be utilized for sensing changes in moisture conditions in an environment by being placed in the environment, causing light to be transmitted through the fiber and detecting changes in the light transmitted through the fiber as a function of the moisture conditions in the environment.
Bibliography:Application Number: EP19890103795