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:
Sep. 07, 2010
Filed:
Dec. 17, 2007
Peng Chen, Wexford, PA (US);
Michael P. Buric, Pittsburgh, PA (US);
Philip R. Swinehart, Columbus, OH (US);
Mokhtar S. Maklad, Westerville, OH (US);
Peng Chen, Wexford, PA (US);
Michael P. Buric, Pittsburgh, PA (US);
Philip R. Swinehart, Columbus, OH (US);
Mokhtar S. Maklad, Westerville, OH (US);
University of Pittsburgh—Of the Commonwealth System of Higher Education, Pittsburgh, PA (US);
Abstract
A gas sensor includes an in-fiber resonant wavelength device provided in a fiber core at a first location. The fiber propagates a sensing light and a power light. A layer of a material is attached to the fiber at the first location. The material is able to absorb the gas at a temperature dependent gas absorption rate. The power light is used to heat the material and increases the gas absorption rate, thereby increasing sensor performance, especially at low temperatures. Further, a method is described of flash heating the gas sensor to absorb more of the gas, allowing the sensor to cool, thereby locking in the gas content of the sensor material, and taking the difference between the starting and ending resonant wavelengths as an indication of the concentration of the gas in the ambient atmosphere.