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:
Oct. 21, 2014
Filed:
Dec. 06, 2012
Finisar Sweden Ab, Jarfalla, SE;
Dave Adams, Stockholm, SE;
Jan-Olof Wesstrom, Stockholm, SE;
Finisar Sweden AB, Jarfalla, SE;
Abstract
Method for modifying the splitting or combining ratio of a first multimode interference (MMI) coupler (), which first coupler is arranged to convey light from one or several input waveguides to one or several output waveguides, wherein a film () of a material is arranged over the first coupler, wherein the film is strained so that a force is applied by the film to the surface of the first coupler, and so that the refractive index profile in the material of the first coupler changes as a consequence of the force, and wherein the splitting or combining ratio is modified as a consequence of the changed refractive index profile.