Patent · US Active

Method for modifying the combining or splitting ratio of a multimode interference coupler

US8867874B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

FINISAR SWEDEN AB · SE

Inventors

Dave Adams · Stockholm, SE
Jan-Olof Wesström · Barcelona, ES

Key dates

Filing date	Dec 6, 2012
Grant date	Oct 21, 2014
Priority date	—
Expiry date	Dec 6, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/29344
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Method for modifying the splitting or combining ratio of a first multimode interference (MMI) coupler (100), which first coupler is arranged to convey light from one or several input waveguides to one or several output waveguides, wherein a film (103a) 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.