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. 15, 1998
Filed:
Feb. 03, 1997
Applicant:
Inventors:
Salvatore Morasca, Como, IT;
Steffen Schmid, Monza, IT;
Assignee:
Pirelli Cavi S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
385-7 ;
Abstract
A double-stage acousto-optical waveguide device comprises two polarization conversion stages, a polarization selective input element, a polarization selective output element and two intermediate polarization selective elements that have two branches connected together and two branches not connected together that are located on opposite sides of the branches connected together and extend in lateral waveguides that reach the edges of the substrate.