Low etendue light source for fiber optic sensors in high temperature environments
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United States of America Patent
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Feb 6, 2018
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app pub date -
Mar 18, 2016
filing date -
Mar 18, 2016
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Abstract
A fiber optic sensor to determine a property in an environment with a temperature exceeding 150 degrees Celsius includes a light source to emit broadband light, an etendue of the light source being less than 1000 square micro meter-steradians (μm2 sr), and an optical fiber to carry incident light based on the broadband light and a reflection resulting from the incident light. A photodetector detects a resultant light based on the reflection and outputs an electrical signal, and a processor processes the electrical signal from the photodetector to determine the property.
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