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:
Dec. 10, 2013
Filed:
Aug. 14, 2007
Massimiliano Dispenza, Rome, IT;
Anna Maria Fiorello, Rome, IT;
Mauro Varasi, Rome, IT;
Selex Sistemi Integrati S.p.A., Rome, IT;
Abstract
Disclosed herein is an optical frequency shifter () provided with: an electro-optical substrate () having a main surface (); an optical waveguide structure () formed in the substrate () and having two waveguide portions (), which are spaced apart by a distance (S) such as to ensure mutual optical coupling therebetween; and an electrode structure () arranged above the main surface () of the substrate () and having at least a first electrode (). The substrate () has a Z-cut crystalline structure with Z crystal axis orthogonal to the main surface () and comprises two oppositely poled portions () having opposite orientations of the Z crystal axis; the two waveguide portions () are arranged underneath the first electrode (), each in a respective one of the two oppositely poled portions ().