BACK-END-OF-LINE EDGE COUPLERS WITH A TAPERED GRATING
Abstract:
Structures for an edge coupler and methods of fabricating such structures. The structure comprises a substrate and a back-end-of-line edge coupler including a waveguide core and a grating positioned in a vertical direction between the substrate and the waveguide core. The first waveguide core includes a first longitudinal axis, the grating includes a second longitudinal axis and a plurality of segments positioned with a spaced-apart arrangement along the second longitudinal axis, and the second longitudinal axis is aligned substantially parallel to the first longitudinal axis.
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