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. 25, 2003
Filed:
Aug. 15, 2000
Applicant:
Inventors:
Leif Fredin, Austin, TX (US);
Brendan Krenek, Georgetown, TX (US);
Assignee:
Systems and Processes Engineering Corp., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01K 1/100 ;
U.S. Cl.
CPC ...
G01K 1/100 ;
Abstract
A system for sensing optical fiber temperature includes a laser that produces a first electromagnetic spectrum. A first optical filter receives the laser output and reflects it. The first optical filter transmits electromagnetic radiation having greater and lesser wavelengths than the laser output. The transmitted light reaches a second optical filter which reflects the light of lesser wavelength, but transmits the light of greater wavelength. A first detector is placed to received the reflected, lower-wavelength light and a second detector is place to receive the transmitted, higher-wavelength light.