Optical fiber moisture sensor

• Main Authors: SADHIR, RAJENDER KUMAR, PEBLER, ALFRED RUDOLF, PETERSON, STEVE HAROLD, PEARCE, HENRY ALEXANDER JR, CAIBORNE, C.CLAIR
• Format: Patent
• Language: English; French; German
• Published: 04.10.1989
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TESTING

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...