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:
Aug. 18, 1998
Filed:
Jun. 28, 1996
Boumedienne Mersali, Arcueil, FR;
Francedilla.ois Dorgeuille, Paris, FR;
France Telecom, Paris, FR;
Abstract
A laser device or double buried heterostructure optical guide amplifier and a simple method for the integration of this device into any photonic circuit. The device has a buffer layer doped with carriers of a first type and covering the entire surface of a substrate doped with carriers of the same type, a first layer playing the role of an optical guide formed by a non-doped quaternary compound and covering the entire surface of the buffer layer, an extremely thin intermediate layer, highly doped with carriers of the first type and covering the entire surface of the guiding layer, one or more strips of active layer playing the role of lasers or amplifiers formed by a non-doped quaternary compound, and a sheathing layer doped with carriers of a second type. The device can be used in the field of integrated optics of optical telecommunications.