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:
May. 10, 1994
Filed:
May. 11, 1989
Applicant:
Inventors:
Nakita Vodjdani, Paris, FR;
Claude Weisbuch, Paris, FR;
Borge Vinter, Paris, FR;
Julien Nagle, Paris, FR;
Michel Papuchon, Massy, FR;
Jean-Paul Pocholle, Arpajon, FR;
Dominique Delacourt, Paris, FR;
Assignee:
Thomson CSF, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; H01L / ;
U.S. Cl.
CPC ...
359130 ; 257 43 ; 359240 ;
Abstract
A semi-conducting structure delimits two quantal wells (CP1, CP2) connected across a barrier layer (CB). The application of an electric field to the structure makes possible the transfer of electrons from one of the wells to the other. The electron-hole pairs are created by a wave-pump, or by the doping of one of the wells. This makes possible, in particular, a dual control by means of the wave-pump and the electric field, thus creating an 'AND'-function modulator.