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US 2006/0066866 A1Published application
Mach Zehnder photonic crystal sensors and methods
AssigneeHewlett-Packard Development Company, L.P.
InventorsShih-Yuan Wang, M. Islam, Alex Bratkovski
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Abstract
A sensor apparatus includes a photonic crystal structure including a Mach Zehnder interferometer with a reference arm and a sensor arm configured to provide an evanescent field through a sensed medium region adjacent to the sensor arm.
Claims21
A sensor apparatus comprising:
- a photonic crystal structure including a Mach Zehnder interferometer with a reference arm and a sensor arm configured to provide an evanescent field through a sensed medium region adjacent to the sensor arm.
A sensor apparatus comprising:
- multiple sensor elements, each of the sensor elements including a photonic crystal Mach Zehnder interferometer with a reference arm and a sensor arm configured to provide an evanescent field through a sensed medium region adjacent to the sensor arm;
- and
- mechanism for detecting outputs of the multiple sensor elements and converting the outputs into data.
A method for sensing comprising:
- providing a photonic crystal Mach Zehnder interferometer that generates an evanescent field through a sensed medium region;
- providing an article of medium at the sensed medium region;
- optically coupling a light source to an input of the photonic crystal Mach Zehnder interferometer;
- and
- detecting an output of the photonic crystal Mach Zehnder interferometer.
2 more elements
Dependencies are inferred from the claim text.