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. 12, 2017
Filed:
Jan. 29, 2015
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite DE Franche-comte, Besancon, FR;
Nadege Courjal, Beure, FR;
Arnaud Gerthoffer, Pouilley les Vignes, FR;
Fabien Henrot, Besancon, FR;
Jean-Yves Rauch, Serre les Sapins, FR;
Clement Guyot, Besancon, FR;
Blandine Edouard, Auxon-Dessous, FR;
CENTRE NATIONAL POUR LA RECHERCHE SCIENTIFIQUE, Paris, FR;
UNIVERSITE DE FRANCHE-COMTE, Besancon, FR;
Abstract
A method for producing a ridge optical waveguide having low coupling losses between the ridge optical waveguide and an optical fiber includes forming on the surface of a dielectric substrate an optical waveguide having a first end and a second end opposite the first end; cutting out two parallel recesses spaced apart by a distance wr on the surface of the dielectric substrate to form a rigid optical waveguide with an increased width (wr) between the two recesses. The recesses are cut such that the depth of each recess changes continuously and gradually between a zero depth at the height of the first end of the optical waveguide and a maximum depth (H) at a pre-determined distance (I) from the first end.