公开(公告)号：US11808936B2

公开(公告)日：2023-11-07

申请号：US17526252

申请日：2021-11-15

Applicant: Cisco Technology, Inc.

Inventor： Sujit Handanhal Ramachandra ,  Matthew Stewart Johnson ,  Trang Thu Pham ,  Aidas A. Jakubenas

IPC: G02B26/00 ,  G02B27/28

CPC classification number: G02B26/00 ,  G02B27/286

Abstract: A method of rotating polarization of light travelling in a waveguide includes receiving an optical signal having a first polarization state at a first section of the waveguide, the first section of the waveguide being disposed on a plane of a substrate, using a micro-electromechanical system (MEMS) device, angling a second section of the waveguide out of the plane of the substrate, and outputting the optical signal with a second polarization state, different from the first polarization state, on a third section of the waveguide, the third section of the waveguide also being disposed on the plane of the substrate. A control loop is provided to sense the polarization shift to control the angle of the MEMS device to compensate for that shift.

公开(公告)号：US20230152571A1

公开(公告)日：2023-05-18

申请号：US17526252

申请日：2021-11-15

Applicant: Cisco Technology, Inc.

Inventor： Sujit Handanhal Ramachandra ,  Matthew Stewart Johnson ,  Trang Thu Pham ,  Aidas A. Jakubenas

IPC: G02B26/00 ,  G02B27/28

CPC classification number: G02B26/00 ,  G02B27/286

Abstract: A method of rotating polarization of light travelling in a waveguide includes receiving an optical signal having a first polarization state at a first section of the waveguide, the first section of the waveguide being disposed on a plane of a substrate, using a micro-electromechanical system (MEMS) device, angling a second section of the waveguide out of the plane of the substrate, and outputting the optical signal with a second polarization state, different from the first polarization state, on a third section of the waveguide, the third section of the waveguide also being disposed on the plane of the substrate. A control loop is provided to sense the polarization shift to control the angle of the MEMS device to compensate for that shift.