公开(公告)号：EP4286906A1

公开(公告)日：2023-12-06

申请号：EP22201882.2

申请日：2022-10-17

Applicant: GlobalFoundries U.S. Inc.

Inventor： Rosenfeld, Adam ,  Bian, Yusheng ,  Afzal, Francis ,  Mulfinger, Bob

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/124 ,  G02B6/132 ,  G02B6/136

Abstract: A structure comprising: a substrate; a waveguide core; and a grating disposed in a vertical direction between the waveguide core and the substrate, the grating including a first plurality of layers and a second plurality of layers that alternate in the vertical direction with the first plurality of layers, the first plurality of layers comprising a first material having a first refractive index, and the second plurality of layers comprising a second material having a second refractive index that is greater than the first refractive index.