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US 2006/0066867 A1Published application
Photonic crystal interferometer
AssigneeHewlett-Packard Development Company, L.P.
InventorRaymond Beausoleil
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Abstract
A sensor apparatus comprising a photonic crystal structure optically coupled to a laser, the photonic crystal structure comprising a beam splitter, an interferometer having a reference arm and a sensor arm, a first output configured to be optically coupled to a bright port photodetector, and a second output configured to be optically coupled to a dark port photodetector.
Claims17
A sensor apparatus comprising:
- a photonic crystal structure optically coupled to a laser, said structure comprising:
- a beam splitter;
- an interferometer having a reference arm and a sensor arm;
- a first output configured to be optically coupled to a bright port photodetector;
- and
- a second output configured to be optically coupled to a dark port photodetector.
3 more elements
A method for sensing comprising:
- providing a laser input to a photonic crystal structure having a sensed medium region;
- supplying a medium in the sensed medium region;
- and
- detecting said medium by measuring a first output and a second output of the photonic crystal structure.
1 more element
A sensor apparatus comprising:
- means for generating a laser input to a photonic crystal structure having a sensed medium region containing a medium;
- and
- means for detecting said medium by measuring a first output and a second output of the photonic crystal structure.
Dependencies are inferred from the claim text.