Integrated optical coupler with one input port and 2 output...

G - Physics – 02 – B

Patent

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G02B 6/125 (2006.01) G02B 6/26 (2006.01) G02B 6/28 (2006.01) G02B 27/10 (2006.01)

Patent

CA 2142651

A coupler is provided having waveguides which are arranged in two symmetrical groups in relation to the axis [X] of the coupler and consist of waveguide branches that are connected in a tree-like manner by n levels of Y- junctions, with at least the two output ports [S1] [S32] that are located farthest from the axis [X] of the coupler being fed by waveguides that have no singularities and that, between the first and the nth junction level of junctions, further consist of points of inflection located outside the junctions. The two junctions [44] [45] in the (n - 1)th level of the junctions that are located closest to the axis [X] of the coupler have axes of symmetry [X1] [X2] that are parallel to the axis of symmetry of the coupler, with the axis of each of these junctions defining an axis of symmetry for two junctions [57] [58] and [59] [510] in the nth junction level that are likewise parallel to the axis of the coupler, and also for the four output ports [S13] to [S16] and [S17] to [S20] that they feed.

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