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. 03, 2002
Filed:
May. 19, 2000
David W. Stowe, Milford, MA (US);
Margaret Manty, Whitinsville, MA (US);
Stavros Dariotis, Attleboro, MA (US);
Colm V. Cryan, Arlington, MA (US);
Thomas & Betts International, Inc., Sparks, NV (US);
Abstract
The present invention is a fused/taper fiber optic coupler and related methodologies for a fuse/taper fiber optic coupler with an FBG that does not excite cladding modes and maintains the coupling regions of the fibers in the proper relationship to one another without a complex and expensive process. Aspects of the fused/taper fiber optic coupler include the use of optical fibers with a three layer structure. The optical fibers include a photosensitive core layer, a photosensitive inner cladding layer, and a photo-insensitive outer cladding layer. Coupling regions are formed in each optical fiber by removing the outer cladding layer and the coupling regions in each optical fiber are then helically intertwined. The intertwined coupling regions are then heated and drawn forming a tapered area in which an FBG may be written.