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    OPTICAL MODULATOR AND OPTICAL TRANSMISSION APPARATUS
    93.
    发明申请
    OPTICAL MODULATOR AND OPTICAL TRANSMISSION APPARATUS 审中-公开

    公开(公告)号：US20180088361A1

    公开(公告)日：2018-03-29

    申请号：US15719730

    申请日：2017-09-29

    Applicant: Sumitomo Osaka Cement Co., Ltd

    Inventor： Toru SUGAMATA ,  Norikazu MIYAZAKI

    IPC: G02F1/03

    CPC classification number: G02F1/0316 ,  G02F1/0327 ,  G02F2203/50

    Abstract: An optical modulator includes an optical modulation element (102) including a plurality of signal electrodes (112a and the like), a plurality of lead pins (116a and the like) for inputting high frequency signals, and a relay substrate (118) in which conductor patterns (202a and the like) that electrically connect the lead pins and the signal electrodes are formed, and at least one of the conductor patterns in the optical modulator is constituted so that at least one resonant frequency of the at least one of the conductor patterns is different from at least one resonant frequency of at least one of the other conductor patterns.

    Optical modulator
    97.
    发明授权
    Optical modulator 有权

    公开(公告)号：US09864216B2

    公开(公告)日：2018-01-09

    申请号：US15604951

    申请日：2017-05-25

    Applicant: Sumitomo Osaka Cement Co., Ltd

    Inventor： Norikazu Miyazaki ,  Tokutaka Hara

    IPC: G02F1/225 ,  G02F1/035 ,  G02F1/21

    CPC classification number: G02F1/035 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/58

    Abstract: An optical modulator includes a substrate having an electro-optic effect, an optical waveguide formed on the substrate, a modulation part which modulates light waves propagating through the optical waveguide, and a light receiving element which detects the light waves propagating through the optical waveguide. As the modulation part, a first modulation part and a second modulation part, which respectively modulate light waves into which input light branches, are provided. As the light receiving element, a light receiving element for the first modulation part and a light receiving element for the second modulation part are provided. The light receiving elements are disposed such that their positions in a light propagation direction are shifted from each other by an amount corresponding to one light receiving element, or more.

    ELECTROSTATIC CHUCKING DEVICE
    98.
    发明申请
    ELECTROSTATIC CHUCKING DEVICE 审中-公开

    公开(公告)号：US20170323819A1

    公开(公告)日：2017-11-09

    申请号：US15528008

    申请日：2015-11-11

    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

    Inventor： Mamoru KOSAKAI

    IPC: H01L21/683 ,  H01L21/67

    CPC classification number: H01L21/6833 ,  B23Q3/15 ,  H01L21/67103 ,  H01L21/67109 ,  H01L21/67248 ,  H01L21/6831 ,  H02N13/00

    Abstract: Provided is an electrostatic chucking device having high heat resistance. The electrostatic chucking device of the present invention includes a first ceramic plate which includes a first surface on which a substrate is able to be placed and a second surface on the opposite side thereof, and in which an internal electrode for electrostatic adsorption is embedded; a heating member fixed to the second surface; a second ceramic plate adhered to the first ceramic plate and the heating member via a first adhesive layer; and a cooling base portion adhered to the second ceramic plate via a second adhesive layer and cools at least the second ceramic plate. The first adhesive layer has a higher heat resistance than the second adhesive layer. The second adhesive layer has a smaller Young's modulus than the first adhesive layer.

    Optical 90-degree hybrid circuit and optical receiver using same
    99.
    发明授权
    Optical 90-degree hybrid circuit and optical receiver using same 有权

    公开(公告)号：US09800349B2

    公开(公告)日：2017-10-24

    申请号：US14389426

    申请日：2013-03-28

    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

    Inventor： Yuji Hayami ,  Toshio Kataoka

    IPC: H04B10/06 ,  H04B10/61 ,  H04J14/06 ,  H04J14/02

    CPC classification number: H04B10/6166 ,  H04B10/614 ,  H04J14/0221 ,  H04J14/06

    Abstract: An object of the present invention is to provide an optical 90-degree hybrid circuit which is capable of easily adjusting the optical power ratio between signal and local oscillator and suppresses an optical system of an optical receiver becoming complex and optical receivers using the same. The optical 90-degree hybrid circuit for demodulating multilevel phase-modulated signals corresponding to individual polarized waves by multiplexing an optical wave having a predetermined plane of polarization contained in signal and local oscillator that has the same wavelength as the signal and has been adjusted to circularly-polarized signal, and polarization-splitting the multiplexed signal includes polarization splitting means (polarization splitting) for extracting an optical wave having a predetermined plane of polarization from the signal, a polarization conversion element for rotating a plane of polarization of the optical wave extracted from the polarization splitting means, and a polarizer that determines a plane of polarization of the signal before multiplexing the signal with the local oscillator, and the polarization splitting means, the polarization conversion element, and the polarizer adjust intensity of the optical signal (VOA function) in cooperation with each other.

    OPTICAL MODULATOR
    100.
    发明申请
    OPTICAL MODULATOR 有权

    公开(公告)号：US20170276975A1

    公开(公告)日：2017-09-28

    申请号：US15468118

    申请日：2017-03-24

    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

    Inventor： KEI KATOU ,  NORIKAZU MIYAZAKI ,  RYO SHIMIZU

    IPC: G02F1/03 ,  G02F1/225

    CPC classification number: G02F1/0327 ,  G02F1/0322 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/58

    Abstract: In an optical modulator, a light-receiving element (3a) that receives a light wave modulated in an optical modulation section (Ma) and a light-receiving element (3b) that receives a light wave modulated in an optical modulation section (Mb) are provided in a substrate. In addition, at least a part of an electrical line (4a) that guides a light-receiving signal output from the light-receiving element (3a) to an outer side of the substrate, and at least apart of an electrical line (4b) that guides a light-receiving signal form the light-receiving element (3b) to an outer side of the substrate are formed in the substrate. In addition, crosstalk suppression means (5), which suppress crosstalk between the electrical line (4a) and the electrical line (4b), is provided between the part of the electrical line (4a) and the part of the electrical line (4b) which are formed in the substrate.

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