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公开(公告)号：US10088734B2
公开(公告)日：2018-10-02
申请号：US15509692
申请日：2016-03-09
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Katsutoshi Kondou , Junichiro Ichikawa , Toshio Kataoka
Abstract: In a waveguide-type optical element, broaderband operation becomes possible. The waveguide-type optical element includes optical waveguides (110 and 112) formed on a substrate (100) having an electro-optic effect and a control electrode for controlling an optical wave that is transmitted through the optical waveguide, the control electrode comprises a central electrode (104) and ground electrodes (106 and 108), the central electrode being formed along the optical waveguide, and the ground electrodes being formed so as to put the central electrode therebetween in a surface direction of the substrate at a predetermined distance from the central electrode, and the central electrode or the ground electrodes have multiple pairs of facets, each comprising two facets facing each other, along a transmission direction of high-frequency signals that are transmitted through the central electrode and the ground electrodes.
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公开(公告)号：US20150205181A1
公开(公告)日：2015-07-23
申请号：US14420110
申请日：2013-08-08
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Katsutoshi Kondou
IPC: G02F1/225
CPC classification number: G02F1/225 , G02B6/125 , G02F1/035 , G02F2001/212 , G02F2201/08 , G02F2202/20
Abstract: An optical waveguide device in which optical characteristics are less degraded even when a branch angle in a Y branch portion of an optical waveguide is great is provided.In an optical waveguide device in which an optical waveguide is formed on a substrate, the optical waveguide includes a first branch portion which branches light into two light rays at a branch angle of 1/35 rad or more, a second branch portion (not illustrated) and a third branch portion (not illustrated) are arranged to be connected to each of two branched waveguides branched from the first branch portion, a radiation light guiding waveguide is arranged between the two branched waveguides of the first branch portion, and guides radiation light radiated from between the two branched waveguides at the first branch portion to the outside of the optical waveguide, and an optical termination portion (an electrode) which absorbs the guided radiation light or emits the guided radiation light to the outside of the substrate is arranged in a termination portion of the radiation light guiding waveguide.
Abstract translation: 提供了即使在光波导的Y分支部分中的分支角度大时光学特性也劣化的光波导装置。 在其中在基板上形成光波导的光波导装置中，所述光波导包括将光以1/35rad以上的分支角分成两束光的第一分支部，第二分支部（未图示） ）和第三分支部分（未示出）被布置成连接到从第一分支部分分支的两个分支波导中的每一个，在第一分支部分的两个分支波导之间布置辐射光导引波导，并且引导辐射光 从第一分支部分处的两个分支波导之间辐射到光波导的外部，并且将吸引被引导的辐射光或将被引导的辐射光吸收到基板的外部的光学终端部分（电极）布置在 辐射光导向波导的终端部分。
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公开(公告)号：US10359653B2
公开(公告)日：2019-07-23
申请号：US15840602
申请日：2017-12-13
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Katsutoshi Kondou , Kiyotaka Nakano , Eiji Murakami
Abstract: A thin-plate LN optical control device includes: a thin-plate LN optical waveguide element which includes an optical waveguide formed by thermal diffusion of Ti in a substrate made of lithium niobate, and a control electrode that is formed on the substrate and is configured to control a light wave propagating through the optical waveguide, and in which at least a part of the substrate is thinned; and a housing that accommodates the thin-plate LN optical waveguide element in an air-tight sealing manner. Oxygen is contained in a filler gas inside the housing.
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公开(公告)号：US09551887B2
公开(公告)日：2017-01-24
申请号：US14780525
申请日：2014-02-27
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Junichiro Ichikawa , Toshio Kataoka , Katsutoshi Kondou
CPC classification number: G02F1/025 , G02F1/0316 , G02F1/0356 , G02F1/225 , G02F2001/0154 , G02F2201/063 , G02F2201/122 , G02F2201/128
Abstract: An optical modulator has a ridge optical waveguide and a modulation electrode. The modulation electrode is composed of a signal electrode to which a modulation signal is supplied, a first ground electrode, and a second ground electrode, the signal electrode has a wide portion having a width wider than the width of the uppermost portion of the ridge optical waveguide, the first ground electrode has a central portion ground electrode component provided on a first surface so as to extend along a first direction, and the second ground electrode has a central portion ground electrode component provided on a second surface so as to extend along the first direction. The central portion ground electrode components respectively have a first and a second through-holes, and these through-holes overlap the wide portion of the signal electrode as seen in a planar view.
Abstract translation: 光调制器具有脊形光波导和调制电极。 调制电极由提供调制信号的信号电极，第一接地电极和第二接地电极构成，信号电极具有比脊状光学器件的最上部宽度宽的宽度 第一接地电极具有沿第一方向设置在第一表面上的中心部分接地电极部件，并且第二接地电极具有设置在第二表面上的中心部分接地电极部件，以沿着第一方向延伸 第一个方向 中心部分接地电极部件分别具有第一和第二通孔，并且如平面图所示，这些通孔与信号电极的宽部分重叠。
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公开(公告)号：US09377666B2
公开(公告)日：2016-06-28
申请号：US14424573
申请日：2013-08-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Katsutoshi Kondou
CPC classification number: G02F1/225 , G02B2006/12159 , G02F1/2257 , G02F2001/212 , G02F2201/58
Abstract: An object is to provide a light modulator capable of highly accurate bias control by maintaining main output characteristics and monitor characteristics in an appropriate relationship and matching a bias point determined using monitor output and an optimal bias point of main output. The light modulator includes an optical waveguide formed in a substrate having a thickness of 20 μm or less, in which the optical waveguide includes a Mach-Zehnder waveguide and an output waveguide for guiding signal light from a multiplexing portion of the Mach-Zehnder waveguide and outputting the signal light outside the substrate and monitoring means that monitors signal light or radiated light. Leaked light-removing means for removing some of the radiated light propagating through the output waveguide from the output waveguide and emitting the radiated light outside the substrate is provided in the light modulator.
Abstract translation: 目的是提供一种能够通过维持主输出特性并以适当的关系监测特性并匹配使用监控输出和主输出的最佳偏置点确定的偏置点来进行高精度偏置控制的光调制器。 光调制器包括形成在厚度为20μm以下的基板中的光波导，其中光波导包括马赫 - 曾德尔波导和用于引导来自马赫 - 策德尔波导的复用部分的信号光的输出波导和 输出基板外的信号光和监视信号光或辐射光的监视装置。 在光调制器中设置有用于从输出波导去除传播通过输出波导的一些辐射光并且发射衬底外部的辐射光的泄漏光去除装置。
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Patent Agency Ranking
6.发明授权公开(公告)号：US09348156B2
公开(公告)日：2016-05-24
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：US20180164612A1
公开(公告)日：2018-06-14
申请号：US15840602
申请日：2017-12-13
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Katsutoshi Kondou , Kiyotaka Nakano , Eiji Murakami
CPC classification number: G02F1/0316 , G02B6/122 , G02B6/13 , G02B6/1342 , G02B6/30 , G02F1/03 , G02F1/035 , G02F1/0353 , G02F1/225 , G02F1/2257
Abstract: A thin-plate LN optical control device includes: a thin-plate LN optical waveguide element which includes an optical waveguide formed by thermal diffusion of Ti in a substrate made of lithium niobate, and a control electrode that is formed on the substrate and is configured to control a light wave propagating through the optical waveguide, and in which at least a part of the substrate is thinned; and a housing that accommodates the thin-plate LN optical waveguide element in an air-tight sealing manner. Oxygen is contained in a filler gas inside the housing.
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公开(公告)号：US20160062155A1
公开(公告)日：2016-03-03
申请号：US14780525
申请日：2014-02-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Junichiro Ichikawa , Toshio Kataoka , Katsutoshi Kondou
IPC: G02F1/025
CPC classification number: G02F1/025 , G02F1/0316 , G02F1/0356 , G02F1/225 , G02F2001/0154 , G02F2201/063 , G02F2201/122 , G02F2201/128
Abstract: An optical modulator has a ridge optical waveguide and a modulation electrode. The modulation electrode is composed of a signal electrode to which a modulation signal is supplied, a first ground electrode, and a second ground electrode, the signal electrode has a wide portion having a width wider than the width of the uppermost portion of the ridge optical waveguide, the first ground electrode has a central portion ground electrode component provided on a first surface so as to extend along a first direction, and the second ground electrode has a central portion ground electrode component provided on a second surface so as to extend along the first direction. The central portion ground electrode components respectively have a first and a second through-holes, and these through-holes overlap the wide portion of the signal electrode as seen in a planar view.
Abstract translation: 光调制器具有脊形光波导和调制电极。 调制电极由提供调制信号的信号电极，第一接地电极和第二接地电极构成，信号电极具有比脊状光学器件的最上部宽度宽的宽度 第一接地电极具有沿第一方向设置在第一表面上的中心部分接地电极部件，并且第二接地电极具有设置在第二表面上的中心部分接地电极部件，以沿着第一方向延伸 第一个方向 中心部分接地电极部件分别具有第一和第二通孔，并且如平面图所示，这些通孔与信号电极的宽部分重叠。
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公开(公告)号：US09946100B2
公开(公告)日：2018-04-17
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：US20160033848A1
公开(公告)日：2016-02-04
申请号：US14780040
申请日：2014-03-13
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Toshio Kataoka , Katsutoshi Kondou , Junichiro Ichikawa
IPC: G02F1/225
CPC classification number: G02F1/225 , G02F1/0316 , G02F1/2255 , G02F2001/212 , G02F2201/121
Abstract: An aspect of the present invention is an optical modulator including a substrate, a plurality of optical waveguides, and a plurality of modulation electrodes provided on the substrate in order to modulate light propagating through the optical waveguides. The modulation electrodes include signal electrodes, to which modulation signals are supplied, and ground electrodes. The signal electrodes include first and second signal electrodes. The ground electrodes include a first ground electrode provided between the first and second signal electrodes, a second ground electrode provided on the opposite side of the first signal electrode from the first ground electrode adjacent to the first signal electrode, and a third ground electrode provided on the opposite side of the second signal electrode from the first ground electrode adjacent to the second signal electrode. A concave groove is formed in each of the first to third ground electrodes.
Abstract translation: 本发明的一个方面是一种光调制器，其包括基板，多个光波导和设置在基板上的多个调制电极，以便调制通过光波导传播的光。 调制电极包括供给调制信号的信号电极和接地电极。 信号电极包括第一和第二信号电极。 接地电极包括设置在第一和第二信号电极之间的第一接地电极，设置在与第一信号电极相邻的第一接地电极的第一信号电极的相反侧的第二接地电极，以及设置在第一接地电极 第二信号电极的相对于与第二信号电极相邻的第一接地电极的相对侧。 在第一至第三接地电极中的每一个中形成凹槽。
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