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. 20, 2009
Filed:
Aug. 13, 2008
Francois Bilodeau, Nepean, CA;
Bernard Malo, Gatineau, CA;
Stephen Mihailov, Kanata, CA;
Abstract
A device for providing an expanded mode field from a single mode optical waveguide is formed by fusing a length of single mode optical fiber with a length of fiber rod absent a cladding and adiabatically tapering the fused region. The length of single mode fiber has a core having a refractive index nand a cladding having a refractive index n, wherein n<nand wherein the cladding has an outer diameter ρ. The length of fiber rod absent the cladding has a refractive index of the fiber rod is substantially the same as the cladding index nof the single mode optical fiber. The outer diameter of the length of fiber rod is ρ, the same as the cladding diameter of the single mode fiber.