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公开(公告)号：US20170255032A1
公开(公告)日：2017-09-07
申请号：US15504254
申请日：2015-08-31
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Toshio KATAOKA , Kei KATO , Junichiro ICHIKAWA
CPC classification number: G02F1/03 , G02F1/0027 , G02F1/025 , G02F1/0316 , G02F1/035 , G02F1/225
Abstract: Provided is an optical modulator including: a relay substrate; a first transmission line that is provided on a flat surface of the relay substrate, and transmits an electrical signal along the flat surface; a second transmission line that is provided separately from the relay substrate, is electrically connected to the first transmission line, and transmits, to the first transmission line, the electrical signal that has been input from an outer side in a direction that is not included in the flat surface; a modulation unit that modulates an optical signal by using the electrical signal that is transmitted by the first transmission line and the second transmission line; and a shield that shields a radiation component of the electrical signal that is radiated from the second transmission line.
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公开(公告)号：US20180011348A1
公开(公告)日：2018-01-11
申请号：US15516196
申请日：2016-03-24
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Teppei YANAGAWA , Katsutoshi KONDOU , Tetsuya FUJINO , Junichiro ICHIKAWA
CPC classification number: G02F1/0327 , G02B6/42 , G02F1/0316 , G02F1/035 , G02F1/225 , G02F2001/212 , G02F2201/12 , G02F2202/20
Abstract: To effectively prevent the acceleration of the drift phenomenon generated by the application of a high electric field to a substrate through a bias electrode in a waveguide type optical element. A waveguide type optical element includes a substrate (100) having an electro-optic effect, two optical waveguides (104 and 106) disposed on a surface of the substrate, a non-conductive layer (120) which is disposed on the substrate and is made of a material having a lower dielectric constant than the substrate, and a control electrode (150) which is disposed on the non-conductive layer and is intended to generate a refractive index difference between the two optical waveguides by respectively applying electric fields to the two optical waveguides, and the non-conductive layer is constituted of a material which includes silicon oxide, an oxide of indium, and an oxide of titanium and has a ratio between a molar concentration of the titanium oxide and a molar concentration of indium oxide of 1.2 or more, and a voltage generating an electric field of 1 V/μm or more in the substrate is applied to the control electrode.
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公开(公告)号：US20160313579A1
公开(公告)日：2016-10-27
申请号：US15103824
申请日：2014-12-11
Applicant: SUMITOMO OSAKA CEMENT CO., LTD. , KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION , NISSAN CHEMICAL INDUSTRIES, LTD.
Inventor： Shiyoshi YOKOYAMA , Feng QIU , Junichiro ICHIKAWA , Satoshi OIKAWA , Youichi HOSOKAWA , Daisuke MAEDA
CPC classification number: G02F1/065 , G02B6/125 , G02F1/0102 , G02F1/225 , G02F1/35 , G02F1/365 , G02F2201/12
Abstract: The present invention provides an electro-optic element including an optical waveguide that is constituted of a core layer made of an inorganic compound and a first clad layer and a second clad layer which are laminated so as to sandwich the core layer therebetween and are made of a dielectric material, and a first electrode layer and a second electrode layer that are formed so as to sandwich the core layer therebetween, the first clad layer, and the second clad layer, in which at least one of the first clad layer and the second clad layer contains an organic dielectric material having an electro-optic effect, and refractive indices of the first clad layer and the second clad layer are lower than a refractive index of the core layer.
Abstract translation: 本发明提供一种电光元件，其包括由无机化合物制成的芯层和第一覆盖层和第二覆盖层构成的光波导，层叠以将芯层夹在其间并由 介电材料，以及形成为将芯层夹在其间的第一电极层和第二电极层，第一覆盖层和第二覆盖层，其中第一覆盖层和第二覆盖层中的至少一个 包层具有电光效应的有机介电材料，第一包层和第二包层的折射率低于芯层的折射率。
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公开(公告)号：US20170235207A1
公开(公告)日：2017-08-17
申请号：US15504292
申请日：2015-08-31
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Toshio KATAOKA , Junichiro ICHIKAWA
IPC: G02F1/313
CPC classification number: G02F1/3134 , G02F1/3133
Abstract: Provided is an optical modulator including: a relay substrate; a first transmission line that is provided on a flat surface of the relay substrate, and transmits, along the flat surface of the relay substrate, an electrical signal that has been input from an outer side; a second transmission line that is provided in the relay substrate, and transmits the electrical signal in a direction that is not included in the flat surface; a modulation unit that modulates an optical signal by using the electrical signal that is transmitted by the first transmission line and the second transmission line; and a shield that shields a radiation component of the electrical signal that is radiated from a contact of the first transmission line and the second transmission line.
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公开(公告)号：US20160223844A1
公开(公告)日：2016-08-04
申请号：US15002511
申请日：2016-01-21
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Junichiro ICHIKAWA
CPC classification number: G02F1/035 , G02F2001/212 , G02F2202/20 , G02F2203/21
Abstract: Provided is an optical control element including a lithium niobate substrate, optical waveguides formed on the substrate, and electrodes for controlling light waves propagating through the optical waveguide, in which a temperature control element for substrate for controlling the temperature of the substrate is provided, and the temperature of the substrate is controlled using the temperature control element for substrate to be maintained at a temperature that is equal to or higher than a predetermined lower limit of temperature at which generation of a photo-refractive effect due to light propagating through the optical waveguide is suppressed and is equal to or lower than 80° C.
Abstract translation: 提供了一种光控制元件，其包括铌酸锂基板，形成在基板上的光波导和用于控制通过光波导传播的光波的电极，其中设置有用于控制基板的温度的基板的温度控制元件，以及 使用用于基板的温度控制元件来控制基板的温度，该温度控制元件保持在等于或高于由于通过光波导传播的光产生光折射效应的预定的下限温度 被抑制并且等于或低于80℃。
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240329436A1
公开(公告)日：2024-10-03
申请号：US18391264
申请日：2023-12-20
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Katsutoshi KONDO , Junichiro ICHIKAWA
IPC: G02F1/035
CPC classification number: G02F1/035
Abstract: An optical waveguide device includes a first substrate including a first optical waveguide and a low refractive index layer covering the first optical waveguide and being formed of a material having a lower refractive index than a refractive index of the first optical waveguide, and a second substrate joined to the first substrate and including a rib type optical waveguide which is a second optical waveguide and is formed of a material having an electro-optic effect, in which the first optical waveguide and the second optical waveguide have parts optically coupled to each other, and in plan view of the optical waveguide device, a protruding portion is formed in the second substrate in a boundary portion where the first optical waveguide overlaps with the second substrate, and a thickness of the second substrate in the protruding portion is set to be thinner than a thickness of the second substrate in the second optical waveguide.
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公开(公告)号：US20190025616A1
公开(公告)日：2019-01-24
申请号：US15755764
申请日：2016-09-27
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Toshio KATAOKA , Junichiro ICHIKAWA
CPC classification number: G02F1/035 , G02F1/011 , G02F1/0123 , G02F1/225 , G02F2201/128
Abstract: Provided is an optical waveguide device in which destabilization of a DC bias which is applied to an optical waveguide, due to a bias electrode picking up electric noise, is reduced and an operating characteristic is stable.An optical waveguide device includes: a substrate having an electro-optic effect; an optical waveguide formed on the substrate; a modulation electrode for applying an electric field corresponding to a modulation signal to the optical waveguide; and a bias electrode for applying an electric field corresponding to a DC bias to the optical waveguide, in which in order to reduce capture of electric noise by the bias electrode, with respect to at least a part of the bias electrode, a plurality of electrode portions (b11, b12) are formed in at least one (B1) of the pair of electrodes by folding back one electric line.
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公开(公告)号：US20180095301A1
公开(公告)日：2018-04-05
申请号：US15719582
申请日：2017-09-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Takeshi SAKAI , Junichiro ICHIKAWA
IPC: G02F1/01
CPC classification number: G02F1/0102 , G02F1/011 , G02F1/0123 , G02F1/035 , G02F1/225
Abstract: Provided is an optical modulator module including a waveguide substrate in which an optical waveguide and control electrodes (signal electrode, DC bias electrodes, and the like) for controlling a light wave propagating through the optical waveguide are formed, a relay substrate which is disposed in the vicinity of the waveguide substrate and in which a DC bias wiring for supplying a DC bias voltage to the control electrodes (DC bias electrodes) is formed, and a package case which stores the waveguide substrate and the relay substrate. A loop of wire standing from the relay substrate to a position higher than a top surface of the waveguide substrate is provided in a part of the DC bias wiring. The loop of wire is disposed inside the package case at a position within 10 mm from any one of locations where a solder is used.
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9.发明申请Optical Waveguide Element and Method for Manufacturing Optical Waveguide Element 有权光波导元件及制造光波导元件的方法公开(公告)号：US20160004105A1
公开(公告)日：2016-01-07
申请号：US14768699
申请日：2014-02-19
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Junichiro ICHIKAWA , Katsutoshi KONDOU
CPC classification number: G02F1/035 , G02B6/126 , G02B6/1342 , G02B2006/12097 , G02F1/3558
Abstract: A method according to an aspect of the present invention, is a method for manufacturing an optical waveguide element, including: an optical waveguide forming step of forming an optical waveguide extending in a first direction in a substrate by doping the substrate with an impurity for reducing a coercive electric field of the substrate, a ridge forming step of forming a first ridge part including the optical waveguide and a second ridge part intersecting the first ridge part, and a poling step of reversing a polarization direction of a region of the substrate divided by the second ridge part by applying voltage to the region.
Abstract translation: 根据本发明的一个方面的方法是一种光波导元件的制造方法，其特征在于，包括：光波导形成工序，其形成在基板的第一方向上延伸的光波导， 所述基板的矫顽电场，形成包括所述光波导的第一脊部的脊形成步骤和与所述第一脊部相交的第二脊部，以及将所述基板的区域的偏振方向反转的极化步骤， 第二脊部分通过向该区域施加电压。
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公开(公告)号：US20210026165A1
公开(公告)日：2021-01-28
申请号：US17042839
申请日：2019-02-27
Applicant: SUMITOMO OSAKA CEMENT CO.,LTD.
Inventor： Katsutoshi KONDO , Kiyotaka NAKANO , Eiji MURAKAMI , Junichiro ICHIKAWA
IPC: G02F1/035
Abstract: To provide an optical element in which an electrode is directly formed on an LN substrate, and a drift phenomenon is suppressed. In an optical element including: a substrate made of lithium niobate crystals; and an electrode disposed on the substrate, the substrate and the electrode are in direct contact with each other, and as a contact metal disposed on a surface of the electrode where the electrode is in contact with the substrate, a metal material whose standard enthalpy of formation per coordinate bond upon oxidation is greater than a standard enthalpy of formation per coordinate bond of niobium pentoxide is used.
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