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:
Mar. 16, 2010
Filed:
Oct. 18, 2007
Pavel Cheben, Ottawa, CA;
Siegfried Janz, Ottawa, CA;
Dan-xia Xu, Ottawa, CA;
Jens Schmid, Ottawa, CA;
Adam Densmore, Orleans, CA;
Jean Lapointe, Ottawa, CA;
Pavel Cheben, Ottawa, CA;
Siegfried Janz, Ottawa, CA;
Dan-Xia Xu, Ottawa, CA;
Jens Schmid, Ottawa, CA;
Adam Densmore, Orleans, CA;
Jean Lapointe, Ottawa, CA;
National Research Council of Canada, Ottawa, ON, CA;
Abstract
An interface device for performing mode transformation in optical waveguides includes an optical waveguide core for propagating light of a particular wavelength or a plurality of wavelengths. The optical waveguide core terminates in a subwavelength grating configured to change the propagation mode of the light. The subwavelength grating has a pitch sufficiently less than the wavelength of the light to frustrate diffraction. The device can thus serve as an optical coupler between different propagating media, or as an anti-reflective or high reflectivity device.