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. 02, 1980
Filed:
Dec. 05, 1978
Applicant:
Inventors:
Georges Hepner, Paris, FR;
Jean-Paul Castera, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9613 ; 350 9629 ;
Abstract
The invention relates to an electrically-controlled optical branch connection, for the guiding of an optical radiation from one input optical fibre to one of n output fibres or vice versa, obtained by associating a plurality of basic cells. Each basic cell comprises an optical guide capable of being controlled electrically so as to produce or not produce, depending on the control signal, a rotation through .pi./2 of the linear polarization at the input of the guide. The axes are so chosen that the polarized radiation issuing from the guide is propagated in the ordinary direction or the extraordinary direction in a bi-refracting plate.