Low etendue light source for fiber optic sensors in high temperature environments
AssigneeBaker Hughes, A Ge Company, LLC
InventorRocco DiFoggio
Life of this patent
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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.
Claims15
A fiber optic sensor to determine a property in an environment with a temperature exceeding 150 degrees Celsius, the sensor comprising:
- a light source configured to emit broadband light, an etendue of the light source being less than 1000 square micro meter-steradians (μm2 sr);
- an optical fiber configured to carry incident light based on the broadband light and a reflection resulting from the incident light;
- a photodetector configured to detect a resultant light based on the reflection and output an electrical signal;
- and
- a processor configured to process the electrical signal from the photodetector to determine the property.
A method of obtaining a property with a fiber optic sensor in an environment with a temperature exceeding 150 degrees Celsius, the method comprising:
- disposing a light source in the environment, the light source emitting broadband light and having an etendue less than 1000 square micro meter-steradians (μm2 sr);
- disposing an optical fiber to carry incident light based on the broadband light and a reflection resulting from the incident light;
- disposing a photodetector to detect a resultant light based on the reflection and output an electrical signal;
- and
- configuring a processor to process the electrical signal from the photodetector to determine the property.
Dependencies are inferred from the claim text.