Integrated optical coupler with two inputs and 2N outputs.

摘要

The acrhromatic 2x2N coupler of the invention comprises (a) a divider (D) by 2 of the optical power received at one of the two inputs (E1,E2) and (b) two groups of single mode waveguides coplanar to the divider and symmetrical relative to the axis of symmetry (Z) of the divider (D), each group being composed of waveguide sections connected in tree and branch fashion by Y junctions (Jii) between one input junction (J11,J12) connected to on e of the outputs of the divider and N sections of waveguide defining N outputs (S1 to S16) of the coupler parallel to the axis of the divider. According to the invention, each of these input junctions (J11,J12) has a rectilinear input br anch (B1) with predetermined length such that the transverse distribution of the optical power at the output of the rectilinear input branch (B1) is centered to a large degree on the axis of this input branch. <IMAGE> <IMAGE>