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:
Nov. 18, 2003
Filed:
Oct. 16, 2001
Konstantin P. Petrov, Mountain View, CA (US);
Other;
Abstract
A method for forming plural waveguide structures in an optical substrate, such as lithium niobate, employs multiple stages of annealed proton exchange. In each stage, the substrate is masked to define a region corresponding to at least one waveguide structure. The mask-defined region is exposed to a proton exchange agent for a predetermined time and at a predetermined temperature, and the substrate is then annealed at predetermined time/temperature conditions. By selecting appropriate process parameters for each APE stage, each of the resultant waveguide structures may be optimized for desired physical and optical characteristics. The method may be utilized, for example, to fabricate sub-Rayleigh range couplers having high coupling efficiencies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile