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. 02, 2003
Filed:
Jul. 27, 2000
Applicant:
Inventors:
Victor Mizrahi, Annapolis, MD (US);
Jean-Luc Archambault, Severna Park, MD (US);
Assignee:
Ciena Corporation, Linthicum, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/34 ;
U.S. Cl.
CPC ...
G02B 6/34 ;
Abstract
An optical waveguide having a refractive index variation is formed by interfering two beams thereon and varying a fringe contrast of the interference pattern. This variation in fringe contrast may be provided by controlling the relative polarizations of the two interfering beams or the relative intensities of the two interfering beams. Preferably, a substantially constant total intensity is provided to the waveguide during the variation in fringe contrast.