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:
Jun. 18, 2002
Filed:
Jan. 28, 2000
Gerald Meltz, Avon, CT (US);
Kenneth O. Hill, Kanata, CA;
OFT Associates LLP, Avon, CT (US);
Abstract
A method of trimming fused-tapered couplers, with or without in-fiber Bragg gratings, to form multiplexers, demultiplexers or combinations of both, by either or both of (1) increasing the phase differential between the symmetric and asymmetric supermodes by irradiating one or both ends of the coupler with UV radiation confined transversely to between the cores of the fibers, and (2) decreasing the phase differential between the modes by irradiating a portion of one or both ends of the coupler with two beams of UV radiation, each confined transversely to include a corresponding core and excluding a significant fraction of the space between the cores.