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公开(公告)号：US10228605B2
公开(公告)日：2019-03-12
申请号：US15893849
申请日：2018-02-12
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Norikazu Miyazaki , Yoichi Hosokawa , Toru Sugamata
Abstract: A waveguide optical element which includes a plurality of optical waveguides provided on a substrate having an electro-optic effect includes: a plurality of signal electrodes controlling light waves propagating through the optical waveguides; and a plurality of ground electrodes provided so as to interpose each of the signal electrodes therebetween, in which at least one of the ground electrodes includes a first layer and a second layer formed on the first layer, the second layer is formed such that a distance between the second layer and the signal electrode adjacent to the second layer is larger than a distance between the first layer and said signal electrode adjacent to said second layer, and a thickness of the ground electrode which includes the first layer and the second layer is 25 μm or more.
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公开(公告)号：US10185165B2
公开(公告)日：2019-01-22
申请号：US15515671
申请日：2016-03-31
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Youichi Hosokawa , Norikazu Miyazaki
Abstract: ObjectTo provide an optical waveguide device capable of suppressing an excess optical loss at a low level.MeansAn optical waveguide device including a substrate having an electro-optic effect, an optical waveguide 1 formed on the substrate, and a control electrode having a signal electrode 2 and ground electrodes 3 and 4 for controlling light waves that propagate through the optical waveguide, in which the signal electrode 2 has, in an intersection portion in which the signal electrode 2 is disposed on the optical waveguide 1, a narrow portion at which a width of the signal electrode 2 is narrower than those of portions before and after the intersection portion.
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公开(公告)号：US10162201B2
公开(公告)日：2018-12-25
申请号：US15515831
申请日：2015-12-24
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Norikazu Miyazaki , Toshio Kataoka , Youichi Hosokawa , Kei Katou
Abstract: Provided is an optical modulator in which low-voltage drive and a stable modulation characteristic are secured over a wide bandwidth. An optical modulator includes: a substrate 10; an optical waveguide (not shown) formed in the substrate 10; a modulation electrode (a signal electrode 11 and a ground electrode 12) for modulating light waves propagating through the optical waveguide; and an external signal line (not shown, only a connection connector 4 is shown) which is provided outside the substrate and supplies a modulation signal to the modulation electrode, in which an impedance value of the modulation electrode in an active region S in which an electric field formed by the modulation electrode is applied to the optical waveguide is set to be lower than an impedance value of the external signal line, and an impedance adjustment part 21 having an impedance adjustment function with respect to mainly a modulation signal in a low-frequency area and configured of a lumped-constant circuit, and an impedance matching line L having an impedance adjustment function with respect to mainly a modulation signal in a high-frequency area are disposed between the external signal line and the active region of the modulation electrode.
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公开(公告)号：US10151959B2
公开(公告)日：2018-12-11
申请号：US15657222
申请日：2017-07-24
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
Abstract: An optical modulator including a flexible printed circuit performing an electrical connection with an external circuit substrate, in which the flexible printed circuit includes a plurality of first pads and the like provided on one surface of the flexible printed circuit along one side of the flexible printed circuit, a plurality of second pads and the like provided on the other surface of the flexible printed circuit at locations that respectively correspond to the plurality of first pads, and a plurality of metal films and the like provided at locations that respectively correspond to the first pads on a side surface of the flexible printed circuit along the one side of the flexible printed circuit.
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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
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.
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Patent Agency Ranking
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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公开(公告)号：US20150063743A1
公开(公告)日：2015-03-05
申请号：US14369511
申请日：2012-12-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kei Katou , Norikazu Miyazaki
CPC classification number: G02F1/035 , G02F1/0121 , G02F1/225 , G02F1/2255 , G02F2001/212
Abstract: An object of the present invention is to provide an optical waveguide element module where the bonding wires can be prevented from disengaging or disconnecting so as to provide high reliability. Another object is to provide an optical waveguide element module that can be made compact and where an increase in the manufacturing cost can be minimized. An optical waveguide element module having: a waveguide substrate 1 on which an optical waveguide (not shown) and control electrodes (E1 to E4) for controlling light waves that propagate through the optical waveguide are formed; external substrates (21 to 24) having wire circuits (TM1, C1), which are connected to control electrodes electrically, disposed proximity to the waveguide substrate; a housing 3 in which the external substrate and the waveguide substrate are arranged; and terminals (T21 to T24) which are connected to an external electric circuit (not shown) for supplying electrical signals to the control electrode or deriving electrical signals from the control electrode provided with the housing, wherein relay electrode pads (CP1, CP4) which are electrically isolated from both of the wiring circuit and the control electrode are formed in any portion of the waveguide substrate 1 and the external substrates (21 to 24), and at least one bonding wire (W21, W22, W41, W42) is connected from a control electrode to the terminal or from the wire circuit to the terminal via the relay electrode pad .
Abstract translation: 本发明的目的是提供一种光波导元件模块，其中可以防止接合线脱离或断开，从而提供高可靠性。 另一个目的是提供一种光波导元件模块，该光波导元件模块可以制造得紧凑并且可以最小化制造成本的增加。 一种光波导元件模块，具有：波导基板1，其上形成有用于控制通过光波导传播的光波的光波导（未示出）和控制电极（E1至E4）; 具有布置在波导基板附近的电连接到控制电极的线路电路（TM1，C1）的外部基板（21至24） 设置有外部基板和波导基板的壳体3; 和连接到用于向控制电极提供电信号或从设置有壳体的控制电极导出电信号的外部电路（未示出）连接的端子（T21至T24），其中继电器电极焊盘（CP1，CP4） 与布线电路电气隔离，并且控制电极形成在波导基板1和外部基板（21〜24）的任意部分，并且至少一个接合线（W21，W22，W41，W42）被连接 从控制电极到终端，或者通过中继电极焊盘从线电路到终端。
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公开(公告)号：US12210232B2
公开(公告)日：2025-01-28
申请号：US17619824
申请日：2020-06-18
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
Abstract: An optical modulator includes a relay substrate having signal conductor patterns that connect input signal terminals and signal electrodes of an optical modulation element and ground conductor patterns, and a housing that accommodates the optical modulation element and the relay substrate. Regarding at least one signal conductor pattern, the two ground conductor patterns sandwiching the signal conductor pattern are formed in an asymmetrical shape in a plan view in a rectangular connection area including a signal connection portion at which the signal conductor pattern and the input signal terminal are connected. The connection area is centered on the at least one signal conductor pattern in a width direction, and has a width equal to a distance to the nearest adjacent signal conductor pattern and a height equal to a distance from an end of the signal connection portion farthest from a signal input side to the signal input side.
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公开(公告)号：US12147097B2
公开(公告)日：2024-11-19
申请号：US17764022
申请日：2020-09-15
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
Abstract: An optical modulator includes: an optical modulation element that is configured to generate two modulated light beams, each of which is modulated by two sets of electrical signals, and that includes a plurality of signal electrodes; a plurality of signal input terminals, each of which inputs an electrical signal; a relay substrate on which a plurality of signal conductor patterns and a plurality of ground conductor patterns are formed, the relay substrate being configured to propagate the two sets of electrical signals by two pairs of the adjacent signal conductor patterns; and a housing, in which the at least two signal conductor patterns including at least one parts mounting part including electrical circuit elements are configured such that first signal propagation directions, which are signal propagation directions at the parts mounting parts, are different from each other.
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20.发明公开公开(公告)号：US20240184181A1
公开(公告)日：2024-06-06
申请号：US18550472
申请日：2022-08-25
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
CPC classification number: G02F1/2255 , G02F1/212
Abstract: An optical waveguide device including: an optical waveguide composed of a protruding portion extending on a substrate; a signal electrode that is formed on the substrate and controls light waves propagating through the optical waveguide, in which the optical waveguide includes a Mach-Zehnder optical waveguide including two parallel waveguides having curved portions, the signal electrode includes two signal lines for transmitting a differential signal, respectively intersecting the two parallel waveguides at the curved portions, and in an intersection region, which is a region on the substrate where the two signal lines and the two parallel waveguides intersect, at least one of the two signal lines has a signal propagation velocity faster than in a portion other than the intersection region or one of the two signal lines has a signal propagation velocity faster than an other signal line.
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