中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

38 records (took 0.018 seconds)

    Polarization conversion element
    12.
    发明授权
    Polarization conversion element 有权
    极化转换元件

    公开(公告)号：US09529151B2

    公开(公告)日：2016-12-27

    申请号：US14976868

    申请日：2015-12-21

    Applicant: FUJIKURA LTD.

    Inventor： Kazuhiro Goi ,  Akira Oka ,  Hiroyuki Kusaka ,  Kensuke Ogawa

    IPC: G02B6/12 ,  G02B6/126 ,  G02B6/14 ,  G02B6/122

    CPC classification number: G02B6/126 ,  G02B6/1228 ,  G02B6/14 ,  G02B2006/1209 ,  G02B2006/12097 ,  G02B2006/12142 ,  G02B2006/12152 ,  G02B2006/12164

    Abstract: A polarization conversion element is disclosed in which an optical waveguide formed on a substrate sequentially includes a first waveguide portion, a polarization rotation portion, and a second waveguide portion, an effective refractive index of a TE mode having the highest effective refractive index in an eigen mode of waveguide light on a sectional surface of the first waveguide portion is higher than an effective refractive index of a TM mode having the highest effective refractive index, an effective refractive index of the TM mode having the highest effective refractive index on a sectional surface of the second waveguide portion is higher than an effective refractive index of the TE mode having the highest effective refractive index, and heights of waveguide structures (for example, cores) of the first waveguide portion and the second waveguide portion are equal to each other.

    Abstract translation: 公开了一种偏振转换元件，其中形成在基板上的光波导依次包括第一波导部分，偏振旋转部分和第二波导部分，在特征中具有最高有效折射率的TE模式的有效折射率 在第一波导部分的截面上的波导光的模式高于具有最高有效折射率的TM模式的有效折射率，在截面上具有最高有效折射率的TM模的有效折射率 第二波导部分高于具有最高有效折射率的TE模式的有效折射率，并且第一波导部分和第二波导部分的波导结构（例如，芯）的高度彼此相等。

    OPTICAL SWITCH AND SWITCHING METHOD
    13.
    发明申请
    OPTICAL SWITCH AND SWITCHING METHOD 有权

    公开(公告)号：US20250147380A1

    公开(公告)日：2025-05-08

    申请号：US18730456

    申请日：2022-12-19

    Applicant: Fujikura Ltd.

    Inventor： Yuichiro Kunai ,  Hiroyuki Kusaka ,  Masahiro Kashiwagi

    IPC: G02F1/31

    Abstract: An optical switch that switches an optical path of signal light obtained by modulating carrier light by a control signal and a data signal, includes an optical modulation element that reflects or refracts the signal light and includes cells each having an independently set phase modulation amount with which the signal light is emitted in a direction corresponding to a ratio of a period of the control signal to a period of the carrier light.

    Light diffraction element and optical computing system
    14.
    发明授权
    Light diffraction element and optical computing system 有权

    公开(公告)号：US12242079B2

    公开(公告)日：2025-03-04

    申请号：US17635483

    申请日：2021-06-17

    Applicant: FUJIKURA LTD.

    Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi

    IPC: G02B27/28 ,  G02B5/18 ,  G02B5/30

    Abstract: A light diffraction element, that has cells, includes first regions and second regions. Each of the cells comprises one of the first regions and one of the second regions. Each of the first regions has a thickness or a refractive index that is independently set. The second regions have a uniform thickness or a uniform refractive index. The first regions allow first polarized components of signal light to pass through. The second regions allow second polarized components of signal light to pass through. The second polarized components are different, in polarization direction, from the first polarized components. The light diffraction element performs optical computing by causing the first polarized components of signal light that have passed through the first regions to interfere with each other. The first polarized components of signal light output from the light diffraction element indicate information after the optical computing.

    OPTICAL DIFFRACTION ELEMENT AND POSITION ADJUSTMENT METHOD FOR OPTICAL DIFFRACTION ELEMENT
    15.
    发明申请
    OPTICAL DIFFRACTION ELEMENT AND POSITION ADJUSTMENT METHOD FOR OPTICAL DIFFRACTION ELEMENT 有权

    公开(公告)号：US20240427165A1

    公开(公告)日：2024-12-26

    申请号：US18262911

    申请日：2021-12-08

    Applicant: Fujikura Ltd.

    Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi

    IPC: G02B27/42 ,  G02F3/00 ,  G06E1/00

    Abstract: A method includes inputting, via a first position adjustment optical structure, adjustment signal light into a second position adjustment optical structure. A first light diffraction element of an optical computing device includes a first computing optical structure constituted by microcells, and the first position adjustment optical structure. A second light diffraction element of the optical computing device includes a second computing optical structure constituted by microcells, and the second position adjustment optical structure. The method includes adjusting, based on the adjustment signal light outputted from the second position adjustment optical structure, a position of the second light diffraction element with respect to the first light diffraction element.

    OPTICAL COMPUTATION SYSTEM
    17.
    发明公开
    OPTICAL COMPUTATION SYSTEM 审中-公开

    公开(公告)号：US20230176267A1

    公开(公告)日：2023-06-08

    申请号：US17923735

    申请日：2021-08-18

    Applicant: FUJIKURA LTD.

    Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi

    IPC: G02B5/18 ,  G02F1/01

    CPC classification number: G02B5/18 ,  G02F1/01 ,  G02B2207/117

    Abstract: An optical computing system includes: an intensity modulation device group including at least two intensity modulation devices, each of which includes modulation cells, wherein each of the modulation cells of each of the intensity modulation devices carries out intensity modulation with respect to carrier light in accordance with one of signals to generate a signal light beam, and each of the signals corresponds to each of the intensity modulation devices; and a light diffraction element including diffraction cells having respective thicknesses or refractive indices set independently of each other, wherein each of the diffraction cells receives the signal light beam from each of the modulation cells of each of the intensity modulation devices corresponding to each of the diffraction cells, and by causing signal light beams to have respective different optical path lengths to the light diffraction element, the signal light beams have respective different phases.

    Filter element, laser device, fiber laser device, filter method, and method for manufacturing laser device
    18.
    发明授权
    Filter element, laser device, fiber laser device, filter method, and method for manufacturing laser device 有权

    公开(公告)号：US11316315B2

    公开(公告)日：2022-04-26

    申请号：US16962985

    申请日：2019-01-23

    Applicant: FUJIKURA LTD.

    Inventor： Hiroyuki Kusaka ,  Masahiro Kashiwagi

    IPC: H01S3/30 ,  H01S3/00 ,  H01S3/10 ,  H01S3/067 ,  H01S3/094

    Abstract: A fiber laser apparatus includes a pump light source that emits pump light; a pump delivery fiber that guides the pump light; an amplifying optical fiber that is optically coupled to the pump delivery fiber and guides laser light; and a filter element that causes more loss of light of a wavelength range that includes a peak wavelength of at least one of Stokes light and anti-Stokes light than the laser light. The Stokes light and anti-Stokes light result from four-wave mixing involving a plurality of guide modes in a multi-mode fiber that guides the laser light. The filter element is disposed between: the pump delivery fiber and the amplifying optical fiber, the amplifying optical fiber and the multi-mode fiber, or at the multi-mode fiber.

Patent Agency Ranking