公开(公告)号：US20230093290A1

公开(公告)日：2023-03-23

申请号：US18071485

申请日：2022-11-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shiyi Cao ,  Zhiwu Chang

IPC: G02B6/12

Abstract: Example gratings, grating characteristic adjustment methods and devices are provided. One example grating includes a first optical waveguide region, a second optical waveguide region, and an arrayed waveguide region comprising a plurality of optical waveguides, where the first optical waveguide region is connected to the arrayed waveguide region, and the second optical waveguide region is connected to the arrayed waveguide region. The grating has at least one of the following characteristics: a refractive index of an optical waveguide in the first optical waveguide region can be changed, a refractive index of an optical waveguide in the second optical waveguide region can be changed, a refractive index of an optical waveguide in the arrayed waveguide region can be changed, or an optical waveguide in an arrayed waveguide region can be eliminated.

公开(公告)号：US20240384993A1

公开(公告)日：2024-11-21

申请号：US18785262

申请日：2024-07-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dongyang Chen ,  Jinghui Xu ,  Shihao Tang ,  Zhiwu Chang

IPC: G01C21/16

Abstract: A method includes the following steps: obtaining a first status of an object, where the first status includes a first position and a first pose; obtaining a second status of the object through inertial navigation by using the first status as a start point, where the second status includes a second position and a second pose; obtaining a third pose of the object through initial alignment; and providing inertial navigation for the object by using the third pose and the second position as a start point. A positioning and orientation apparatus and a positioning and orientation device are further provided. The second pose is replaced with the third pose obtained through initial alignment.

公开(公告)号：US12092865B2

公开(公告)日：2024-09-17

申请号：US18071485

申请日：2022-11-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shiyi Cao ,  Zhiwu Chang

IPC: G02B6/12

CPC classification number: G02B6/12033 ,  G02B6/12016 ,  G02B2006/12164

Abstract: Example gratings, grating characteristic adjustment methods and devices are provided. One example grating includes a first optical waveguide region, a second optical waveguide region, and an arrayed waveguide region comprising a plurality of optical waveguides, where the first optical waveguide region is connected to the arrayed waveguide region, and the second optical waveguide region is connected to the arrayed waveguide region. The grating has at least one of the following characteristics: a refractive index of an optical waveguide in the first optical waveguide region can be changed, a refractive index of an optical waveguide in the second optical waveguide region can be changed, a refractive index of an optical waveguide in the arrayed waveguide region can be changed, or an optical waveguide in an arrayed waveguide region can be eliminated.