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:
Jun. 23, 2026
Filed:
Jul. 14, 2021
National Research Council of Canada, Ottawa, CA;
Carleton University, Ottawa, CA;
Pavel Cheben, Ottawa, CA;
Jens H. Schmid, Ottawa, CA;
Pablo Ginel-Moreno, Málaga, ES;
Daniel Pereira-Martin, Málaga, ES;
Abdelfettah Hadij-Elhouati, Málaga, ES;
Winnie N. Ye, Ottawa, CA;
Daniele Melati, Ottawa, CA;
Dan-Xia Xu, Ottawa, CA;
Siegfried Janz, Ottawa, CA;
Alejandro Sanchez-Postigo, Ottawa, ES;
Alejandro Ortega-Monux, Malaga, ES;
Inigo Molina-Fernandez, Malaga, ES;
J. Gonzalo Wangueemert-Perez, Malaga, ES;
NATIONAL RESEARCH COUNCIL OF CANADA, Ottawa, CA;
Abstract
An interface device for performing off-chip coupling in optical waveguides includes an optical waveguide core for propagating light of a particular wavelength or a plurality of wavelengths and an array of radiative elements configured to change the propagation direction of the light. The optical waveguide core is configured to control the effective refractive index of the propagation mode of the light. The device can thus serve as an optical antenna for coupling between a waveguide mode and a free-space propagating beam or a plurality of free-space propagating beams in an arrayed configuration.