EFPI sensor
AssigneeBaker Hughes Incorporated
InventorsDaniel S. Homa, Robert M. Harman, Brooks A. Childers, Alexander M. Barry, Brian S. Lucas
Life of this patent
Estimating the term…
Abstract
An apparatus for estimating a property, the apparatus includes: a hollow core tube having a first opening and a second opening; a first optical waveguide disposed within the first opening; and a second optical waveguide disposed within the second opening and spaced a distance from the first optical waveguide, the distance being related to the property; wherein a portion of at least one of the optical waveguides within the tube is perimetrically isolated from the tube.
Claims21
An apparatus for estimating a property, the apparatus comprising:
- a hollow core tube comprising a first opening and a second opening;
- a first optical waveguide disposed within the first opening;
- and
- a second optical waveguide disposed within the second opening and spaced a distance from the first optical waveguide, the distance being related to the property;
- wherein at least one of the optical waveguides within the tube includes a tapered region disposed within and perimetrically isolated from the tube beyond a point of connection with the tube.
A system for estimating a property, the system comprising:
- a hollow core tube comprising a first opening and a second opening;
- a first optical waveguide disposed within the first opening;
- a second optical waveguide disposed within the second opening and spaced a distance from the first optical fiber, the distance being related to the property, a portion of at least one of the optical fibers within the tube includes a tapered region disposed within and perimetrically isolated from the tube beyond a point of connection with the tube;
- a light source in optical communication with the first optical waveguide and configured to transmit an input light signal;
- and
- a light detector in optical communication with the first optical waveguide and configured to detect light reflections of the input light signal wherein the light reflections are related to the distance.
A method for estimating a property, the method comprising:
- using an Extrinsic Fabry-Perot Interferometer sensor, the sensor comprising a hollow core tube comprising a first opening and a second opening;
- a first optical waveguide disposed within the first opening;
- and a second optical waveguide disposed within the second opening and spaced a distance from the first optical waveguide, the distance being related to the property, a portion of at least one of the optical waveguides within the tube includes a tapered region disposed within and perimetrically isolated from the tube beyond a point of connection with the tube;
- transmitting input light into the first optical waveguide;
- detecting reflections of the input light;
- and
- estimating the property from the reflections.
Dependencies are inferred from the claim text.