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:
Feb. 19, 2013
Filed:
Mar. 23, 2006
Glen Peter Koste, Niskayuna, NY (US);
Richard Louis Frey, Delanson, NY (US);
Joseph Alfred Iannotti, Glenville, NY (US);
Glen Peter Koste, Niskayuna, NY (US);
Richard Louis Frey, Delanson, NY (US);
Joseph Alfred Iannotti, Glenville, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
An optical sensor interrogation system comprises: a multi-frequency optical source configured to generate an optical interrogation signal, at least one optical sensor configured to filter light at a wavelength corresponding to a value of a sensed parameter and generate an optical sensor data signal, a photodetector configured to detect a reference signal and the optical sensor data signal and generate an electrical difference frequency signal corresponding to a wavelength difference between the reference signal and the optical sensor data signal, and an electrical frequency measurement module configured to measure the electrical difference frequency.