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    Optical path-changing device having curved waveguide
    11.
    发明授权
    Optical path-changing device having curved waveguide 有权
    具有弯曲波导的光路改变装置

    公开(公告)号：US09213214B2

    公开(公告)日：2015-12-15

    申请号：US14357753

    申请日：2012-10-22

    Applicant: Korea Advanced Institute of Science and Technology

    Inventor： Hyo-Hoon Park ,  Jong Hun Kim ,  Young-Tak Han

    IPC: G02B6/42 ,  G02F1/313 ,  G02B6/35 ,  G02F1/315 ,  H04Q11/00

    CPC classification number: G02F1/3137 ,  G02B6/35 ,  G02B6/354 ,  G02F1/315 ,  H04Q11/0005

    Abstract: In accordance with the present invention, there is provided an optical path-changing device having one or more curved waveguides, which not only can change an optical path at a large angle close to a perpendicular direction after light or an optical signal has been incident and reflected, but also can change the optical path in various directions, such as for straight pass, left turn, and right turn. An optical path-changing device having one or more curved waveguides according to an embodiment of the present invention includes a first waveguide (11) formed in a straight line. A second waveguide (12) is configured to branch from the first waveguide in a first direction and formed in a shape of curved line. A first reflector (21) is arranged in a region in which the second waveguide branches from the first waveguide.

    Abstract translation: 根据本发明，提供了一种具有一个或多个弯曲波导的光路改变装置，其不仅可以在光线或光信号入射之后在靠近垂直方向的大角度改变光路， 反射，也可以在各个方向上改变光路，例如直通，左转和右转。 根据本发明的实施例的具有一个或多个弯曲波导的光路改变装置包括以直线形成的第一波导（11）。 第二波导管（12）被配置为沿第一方向从第一波导分支并且形成为曲线形状。 第一反射器（21）布置在第二波导从第一波导分支的区域中。

    OPTICAL MODULE PACKAGE USING BI-ANGLED SILICA WAVEGUIDE
    13.
    发明公开
    OPTICAL MODULE PACKAGE USING BI-ANGLED SILICA WAVEGUIDE 审中-公开

    公开(公告)号：US20230236368A1

    公开(公告)日：2023-07-27

    申请号：US17684895

    申请日：2022-03-02

    Applicant: Korea Advanced Institute of Science and Technology

    Inventor： Hyo-Hoon Park ,  HyunHo Yun ,  Jaeyong Kim

    IPC: G02B6/42

    CPC classification number: G02B6/4214 ,  G02B6/42

    Abstract: An optical module package using a bidirectional polished silica optical waveguide is disclosed. An optical module package may include a planar optical waveguide that connects at least one aperture of each of the optical components and including inclined surfaces at both ends thereof to allow light, which exits from at least one aperture of any one optical component of the optical components to be subjected to optical coupling in a vertical direction through total reflection on an inclined surface corresponding to the at least one aperture of the any one optical component to cause the light to travel in a horizontal direction, and allows the light to be subjected to optical coupling to at least one aperture of a remaining optical component in the vertical direction through total reflection on the inclined surface corresponding to the at least one aperture of the remaining optical component.

    Silicon-opa-based lidar for measuring distance using quasi-frequency modulation
    14.
    发明授权
    Silicon-opa-based lidar for measuring distance using quasi-frequency modulation 有权

    公开(公告)号：US11609330B2

    公开(公告)日：2023-03-21

    申请号：US16839277

    申请日：2020-04-03

    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Hyo-Hoon Park ,  Hyeonho Yoon ,  Nam-Hyun Kwon ,  Kyeongjin Han ,  Hyun-Woo Rhee ,  Geum-Bong Kang

    IPC: G01S7/481 ,  G01S17/32 ,  G01S7/4913

    Abstract: A silicon phased array based LiDAR device that measures a distance using a quasi-frequency modulation is disclosed. A LiDAR device according to an exemplary embodiment of the inventive concept includes a light source that generates an optical signal, an optical modulator that generates a first optical signal having a quasi-frequency whose a modulation frequency constantly varies with time by modulating a light intensity of the optical signal, an optical splitter that splits optical power of the first optical signal into a reference optical signal and a transmit (Tx) optical signal, an optical transmitter that receives and emits the Tx optical signal toward an object, an optical receiver that receives a receive (Rx) optical signal reflected from the object and transfers the Rx optical signal, an optical coupler that mixes the reference optical signal and the Rx optical signal, a balanced photodetector that detects an intermediate frequency from the optical signal transferred from the optical coupler and a distance calculator that obtains distance information by measuring the intermediate frequency.

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