公开(公告)号：US20170227711A1

公开(公告)日：2017-08-10

申请号：US15495583

申请日：2017-04-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xin TU ,  Dongyu GENG ,  Fei ZHAO

IPC: G02B6/12 ,  H04J14/04 ,  G02B6/293 ,  G02B6/125 ,  G02B6/30 ,  G02B6/14

CPC classification number: G02B6/12007 ,  G02B6/12 ,  G02B6/125 ,  G02B6/14 ,  G02B6/29331 ,  G02B6/30 ,  H04J14/04

Abstract: The present invention discloses a mode multiplexer/demultiplexer and a switching node. The mode multiplexer/demultiplexer includes a multi-mode optical waveguide, a first transmission optical waveguide, and a second transmission optical waveguide. The multi-mode optical waveguide includes a first mode channel and a second mode channel. The first transmission optical waveguide includes a first coupling region that includes a first fundamental-mode channel, and the first fundamental-mode channel performs optical mode coupling with the first mode channel in the multi-mode optical waveguide. The second transmission optical waveguide includes a second coupling region that includes a second fundamental-mode channel, and the second fundamental-mode channel performs optical mode coupling with the second mode channel in the multi-mode optical waveguide. An effective refractive index of a fundamental-mode optical signal in the first coupling region is different from an effective refractive index of the same fundamental-mode optical signal in the second coupling region.

公开(公告)号：US20170299812A1

公开(公告)日：2017-10-19

申请号：US15587468

申请日：2017-05-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fei ZHAO ,  Xin TU

IPC: G02B6/14 ,  G02B6/38 ,  G02B6/126 ,  G02B6/124 ,  G02B6/13 ,  G02B6/12

CPC classification number: G02B6/14 ,  G02B6/12 ,  G02B6/124 ,  G02B6/125 ,  G02B6/126 ,  G02B6/13 ,  G02B6/2821 ,  G02B6/3885 ,  G02B2006/121 ,  H04B10/2581 ,  H04J14/04

Abstract: A mode converter provided in the present invention includes an input multimode waveguide, an output multimode waveguide, and a first conversion waveguide, where the input multimode waveguide is configured to receive a first signal which mode is a first mode; the first conversion waveguide has an input coupling waveguide with a first effective refractive index, and has an output coupling waveguide with a second effective refractive index: the first conversion waveguide is configured to perform, by using the input coupling waveguide, evanescent wave coupling on the first signal that is in the first mode and that is transmitted in the input multimode waveguide, and couple the first signal to the second mode of the output multimode waveguide by using the output coupling waveguide, so as to obtain the first signal in the second mode; and the output multimode waveguide is configured to output the first signal in the second mode.