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. 19, 2020
Filed:
Jul. 31, 2017
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Simon Plantier, Grenoble, FR;
Marco Casale, Grenoble, FR;
Daivid Fowler, Saint Martin le Vinoux, FR;
Christophe Kopp, Fontanil Cornillon, FR;
Abstract
An optical coupling device for producing an optical coupling between an optical fiber and photonic circuits. The device includes a substrate and at least two coupling stages integrated on the substrate, and: each coupling stage includes a grating coupler configured to implement an optical coupling centered on a respective central wavelength; the multiple grating couplers are superimposed on top of each other, along an axis orthogonal to the substrate plane; at least one of the grating couplers is insensitive to polarization. The device can form, for example, a wide band coupler, wherein each portion of the spectrum is coupled by a coupling stage. As an alternative, such a device can form an emitting and receiving coupler, where emission and reception spectra are each coupled by a respective coupling stage.