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:
Jan. 04, 2011
Filed:
Jun. 04, 2007
Serge Caron, Saint-Augustin-de-Desmaures, CA;
Lia Mouslinkina, Québec, CA;
Claude Pare, Saint-Augustin-de-Desmaures, CA;
André Fougeres, Québec, CA;
Serge Caron, Saint-Augustin-de-Desmaures, CA;
Lia Mouslinkina, Québec, CA;
Claude Pare, Saint-Augustin-de-Desmaures, CA;
André Fougeres, Québec, CA;
Institut National D'Optique, Quebec, QC, CA;
Abstract
There is provided an evanescent wave multimode optical waveguide sensitive to a chemical species or to a physical parameter. The optical waveguide comprises a core and a cladding having a cladding refractive index lower than that of the core for guiding light to be propagated in the optical waveguide. The cladding defines with the core an optical waveguide providing mode coupling. A chemical indicator is provided in the cladding for causing a variation of the optical absorption of the cladding as a function of the chemical species or the physical parameter. The cladding is interrogated by the evanescent wave of the propagated light. The mode coupling causes unabsorbed light power to be redistributed among the multiple modes while light propagates along the optical waveguide.