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:
Oct. 16, 2018
Filed:
Aug. 25, 2014
Applicants:
Foce Technology International Bv, Maria Hoop, NL;
Fsp Llc, Vancouver, WA (US);
Inventor:
Marcel F Schemmann, Maria Hoop, NL;
Assignee:
FOCE TECHNOLOGY INTERNATIONAL BV, BN Maria Hoop, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 1/24 (2006.01); G01D 3/028 (2006.01); G01D 5/353 (2006.01);
U.S. Cl.
CPC ...
G01L 1/246 (2013.01); G01D 3/028 (2013.01); G01D 5/35316 (2013.01);
Abstract
A pressure sensor includes a single-mode optical fiber and a fiber Bragg grating coupled to the single model fiber. The sensor detects a wavelength shift of a reflection spectrum of the Bragg grating for input light signals to the single mode fiber at different polarization states. A pressure measurement is obtained by determining at least a pair of mutually orthogonal polarization states for the input light at which the wavelength shift of a reflection spectrum of the Bragg grating is a maximum.