The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2016
Filed:
Nov. 12, 2014
Marcel W. Pruessner, Chevy Chase, MD (US);
Todd H. Stievater, Arlington, VA (US);
William S. Rabinovich, Silver Spring, MD (US);
Marcel W. Pruessner, Chevy Chase, MD (US);
Todd H. Stievater, Arlington, VA (US);
William S. Rabinovich, Silver Spring, MD (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A method and system described for sensing a displacement by receiving and propagating a laser light signal with an etched waveguide that is configured to enable an evanescent optical field above the waveguide surface. A movable perturber can be positioned so the perturber interacts with the evanescent optical field above the waveguide surface. An optical phase shift can be induced in the waveguide when the movable perturber is displaced in the evanescent optical field, and the optical phase shift can be measured with an optical readout circuit.