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US 5,439,647 AGranted
Chip level waveguide sensor
AssigneeFiberChem Inc.
InventorDevinder P. Saini
Life of this patent
Estimating the term…
Abstract
Waveguide sensors are formed on a chip package which contains at least one source and at least one detector. Simple waveguide elements are mounted on the chip. Waveguide defining elements can also be formed integrally with the chip package so that simple waveguide bodies can be inserted or removed. Various geometries of source, reference detector, and sensing detector can be produced. A liquid waveguide sensor is formed by filling a waveguide channel with a liquid reagent.
Claims22
An optical waveguide chemical sensor comprising:
- a modular substrate having at least one light source and at least one light detector formed internally therein and covered by an optically transparent material;
- a waveguide structure mounted on said substrate and extending over said at least one source and at least one detector, said waveguide structure including direction turning means for guiding light from said at least one source into said waveguide structure and direction turning means for guiding light from said waveguide structure to said at least one detector;
- and
- a sensing chemistry formed on or in a portion of the waveguide structure.
1 more element
Dependencies are inferred from the claim text.