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    WAVEGUIDE PHOTODETECTOR
    1.
    发明申请
    WAVEGUIDE PHOTODETECTOR 有权

    公开(公告)号：US20210255385A1

    公开(公告)日：2021-08-19

    申请号：US17173681

    申请日：2021-02-11

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Joong-Seon CHOE ,  Duk Jun KIM ,  Jong-Hoi KIM ,  Jonghyurk PARK ,  Won Seok HAN

    IPC: G02B6/12 ,  G02B6/42 ,  G02B6/122 ,  H01L31/0232

    Abstract: Provided is a waveguide photodetector including a semiconductor substrate, a first optical waveguide and a second optical waveguide, which are sequentially laminated on the semiconductor substrate, in which each of the first optical waveguide and the second optical waveguide includes a first portion and a second portion, and the first portion extends from the second portion in a first direction parallel to a top surface of the semiconductor substrate, a refractive index matching layer disposed on the second portion of the second optical waveguide, a clad layer disposed on the refractive index matching layer, and an absorber disposed between the refractive index matching layer and the clad layer. Here, the second optical waveguide has a first conductive-type, the clad layer has a second conductive-type opposite to the first conductive-type, and the refractive index matching layer includes a first semiconductor layer that is an intrinsic semiconductor layer.

    OPTICAL ALIGNMENT DEVICE
    2.
    发明公开
    OPTICAL ALIGNMENT DEVICE 审中-公开

    公开(公告)号：US20230258885A1

    公开(公告)日：2023-08-17

    申请号：US18079973

    申请日：2022-12-13

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Joong-Seon CHOE ,  Duk Jun KIM ,  Chun Ju YOUN

    IPC: G02B6/42

    CPC classification number: G02B6/423 ,  G02B6/4202 ,  G02B6/4243

    Abstract: An optical alignment device according to an embodiment of the inventive concept includes an optical alignment plate having a first hole and at least one second hole, in which the first hole and the second hole pass through the optical alignment plate, and an optical detection element disposed on the optical alignment plate. Here, the optical detection element includes a substrate having a first surface and a second surface, which face each other, a lens disposed on the first surface, and an optical sensor disposed on the second surface, and the optical detection element vertically overlaps the first hole and the second hole. The lens is exposed to the outside by the first hole, and the second hole is connected with a vacuum suction unit to fix the optical detection element to the optical alignment plate.

    APPARATUS AND METHOD FOR MEASURING IQ IMBALANCE FOR OPTICAL RECEIVER
    4.
    发明申请
    APPARATUS AND METHOD FOR MEASURING IQ IMBALANCE FOR OPTICAL RECEIVER 有权
    用于测量光接收机智能不平等的装置和方法

    公开(公告)号：US20140169786A1

    公开(公告)日：2014-06-19

    申请号：US14027445

    申请日：2013-09-16

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Chun Ju YOUN ,  Jong-Hoi KIM ,  Joong-Seon CHOE ,  Duk Jun KIM ,  Yong-Hwan KWON ,  Eun Soo NAM

    IPC: H04B10/077

    CPC classification number: H04B10/0731 ,  H04B10/613 ,  H04L27/223 ,  H04L27/364 ,  H04L2027/0083

    Abstract: Provided is an apparatus and method for measuring IQ imbalance, and in particular, is an apparatus and method for measuring IQ imbalance for an optical receiver. The apparatus for measuring IQ imbalance for an optical receiver includes a light generating unit generating optical and reference signals to provide the optical and reference signals to an optical receiver, a graph creating unit creating a Lissajous figure by using an in-phase (I) signal and a quadrature-phase (Q) signal output from the optical receiver in response to the optical and reference signals, and a calculating unit calculating IQ imbalance for the optical receiver with reference to the Lissajous figure.

    Abstract translation: 提供了一种用于测量IQ不平衡的装置和方法，特别是用于测量光接收机的IQ不平衡的装置和方法。 用于测量光接收机的IQ不平衡的装置包括产生光学和参考信号以向光学接收器提供光学参考信号的光产生单元，通过使用同相（I）信号产生李萨诸图形的图形创建单元 以及响应于光学参考信号从光学接收器输出的正交相位（Q）信号，以及计算单元，参考利萨如图来计算光学接收机的IQ不平衡。

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