Back to results
US 2016/0238585 A1Published application
Integrated computational elements with planar waveguide
AssigneeHalliburton Energy Services, Inc.
InventorsDavid L. Perkins, Christopher Michael Jones, Nagaraja Pai, Michael T. Pelletier
Life of this patent
Estimating the term…
Abstract
In some implementations, optical analysis systems use an integrated computational element (ICE) that includes a planar waveguide configured as an ICE core. In other implementations, the ICE used by the disclosed optical analysis systems includes a planar waveguide configured as a spectrograph, the spectrograph to be integrated with a conventional ICE.
Claims27
An optical analysis tool comprising:
- an integrated computational element (ICE) to
- receive, when the tool is operated, light from a sample, and
- process at least a portion of the received light, such that the processed light is related, over a processing wavelength range, to a characteristic of the sample, wherein the ICE comprises
- (I) a dispersive optical element comprising
- an input port,
- a substrate and a planar waveguide disposed on the substrate, the planar waveguide to guide light input through the input port, such that the guided light is within an operational wavelength range that encompasses the processing wavelength range,
- diffractive structures distributed along the planar waveguide to spatially separate the guided light into a plurality of wavelength sub-ranges of the operational wavelength range, wherein a distribution of the diffractive structures is such that the dispersive optical element functions as a spectrograph that weights the respective wavelength sub-ranges of the spatially separated light by substantially equal amounts, and
- a plurality of output ports to output the spatially separated light of the respective wavelength sub-ranges and
- (II) an ICE core that weights light incident thereof by differing amounts corresponding to the wavelength sub-ranges within the processing wavelength range, the different amounts being related to the characteristic of the sample.
6 more elements
(canceled)
(canceled)
(canceled)
16-18. (canceled)
An optical analysis tool comprising:
- an integrated computational element (ICE) to
- receive, when the tool is operated, light from a sample, and
- process at least a portion of the received light, such that the processed light is related, over a processing wavelength range, to a characteristic of the sample,
- wherein the ICE comprises
- a dispersive optical element comprising
- an input port,
- a substrate and a planar waveguide disposed on the substrate, the planar waveguide to guide light input through the input port, such that the guided light is within an operational wavelength range that encompasses the processing wavelength range,
- diffractive structures distributed along the planar waveguide to spatially separate the guided light into a plurality of wavelength sub-ranges of the operational wavelength range, wherein a distribution of the diffractive structures is such that the dispersive optical element functions as an ICE core that weights the respective wavelength sub-ranges of the spatially separated light by differing amounts corresponding to the wavelength sub-ranges, the differing amounts being related to the characteristic of the sample, and
- a plurality of output ports to output the spatially separated light of the respective wavelength sub-ranges.
6 more elements
(canceled)
(canceled)
29-33. (canceled)
Dependencies are inferred from the claim text.