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. 07, 1999
Filed:
Feb. 11, 1999
Glenn E Kohnke, Painted Post, NY (US);
Kevin B Sparks, Corning, NY (US);
Corning, Inc., Corning, NY (US);
Abstract
Disclosed is a tuning method for optical interference devices which comprise at least one plurality of waveguides arranged to produce a preselected phase shift in light transmitted therethrough. The tuning is carried out by irradiating the plurality of waveguides using a source of UV light. The method is faster and more reproducible than other tuning methods known in the art, such as tuning by heat induced dopant diffusion. The method is exemplified by data taken using a Mach-Zehnder interferometer. However, the method is compatible with more sophisticated devices which use integrated waveguides or large numbers of waveguides in the phase changing portion of the device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile