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:
Jul. 14, 1998
Filed:
Apr. 01, 1996
Applicant:
Inventors:
Steffen Schmid, Monza, IT;
Sergio Bosso, Assago, IT;
Assignee:
Pirelli Cavi S.p.A., , IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; H01L / ;
U.S. Cl.
CPC ...
385-7 ; 385-9 ; 385 10 ; 385 14 ; 385 15 ; 385 39 ; 385 40 ; 385 41 ; 385130 ; 385131 ; 385132 ; 385 11 ; 437 51 ; 437101 ; 437141 ;
Abstract
An acoustooptical wavelength device for wavelength selection includes one substrate of a birefringent and photoelastic material on which there is formed: first and second rotation stages of the polarization plane of an optical signal in a first wavelength interval, wherein each stage comprises at least one optical waveguide traveled over by the signal; at least one optical waveguide, connecting the two stages and carrying one single polarizer consisting of an evanescent-wave polarization coupler; and at least one optical waveguide carrying one polarizer being finally provided downstream of the second stage.