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:
Jul. 19, 2016
Filed:
Mar. 18, 2014
Commissariat a L'engerie Atomique ET Aux Energies Alternatives, Paris, FR;
Nicolas Chimot, Bruyeres le Chatel, FR;
Francois Lelarge, Paris, FR;
Abstract
An optical filtering device () comprising: a ring resonator (); and a multimode interference coupler () comprising two inputs (), two outputs () and a multimode waveguide () connecting the two inputs to the two outputs, the coupler having a first input () serving as an input for the filtering device and able to receive an input optical signal (), and a first output () corresponding to the output of the filtering device and able to produce an output optical signal (),the ring resonator () being arranged so as to connect a second output () of the coupler to a second input () of the coupler,wherein the filtering device comprisesa tuning element () able to modify locally the refractive index in the coupling zone () of said multimode waveguide () in order to vary a coupling coefficient between the coupler () and the ring resonator ().