公开(公告)号：US20190285799A1

公开(公告)日：2019-09-19

申请号：US16295929

申请日：2019-03-07

Applicant: STMicroelectronics (Crolles 2) SAS

Inventor： Sylvain GUERBER ,  Charles BAUDOT

IPC: G02B6/122

Abstract: An optical waveguide is configured to propagate a light signal. Metal vias are arranged along and on either side of a portion of the optical waveguide. Additional metal vias are further arranged along and on either side of the optical waveguide both upstream and downstream of the portion of the optical waveguide. The metal vias and additional metal vias are oriented orthogonal to a same plane, the same plane being orthogonal to a transverse cross-section of the portion of the optical waveguide.

公开(公告)号：US20190285802A1

公开(公告)日：2019-09-19

申请号：US16295553

申请日：2019-03-07

Applicant: STMicroelectronics (Crolles 2) SAS

Inventor： Sylvain GUERBER ,  Charles BAUDOT

IPC: G02B6/24 ,  G02B6/42 ,  G02B6/122

Abstract: An optical waveguide termination device includes a waveguide and metal vias surrounding an end portion of the waveguide. The end portion of the waveguide has a transverse cross-sectional area that decreases towards its distal end. The metal vias are orthogonal to a same plane, with the same plane being orthogonal to the transverse cross-section. The metal vias absorb light originating from the end portion when a light signal propagates through the waveguide, and the metal vias and the end portion provide that an effective index of an optical mode to be propagated through the waveguide progressively varies in the end portion. Additional metal vias may be present along the waveguide upstream of the end portion, with the additional metal vias bordering the waveguide upstream of the end portion providing that the effective index of an optical mode to be propagated through the waveguide varies progressively toward the end portion.