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21.发明申请公开(公告)号：US20210165299A1
公开(公告)日：2021-06-03
申请号：US17105706
申请日：2020-11-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Masayuki Motoya , Toru Sugamata
Abstract: An optical waveguide element including a substrate, an optical waveguide formed on the substrate, and an electrode for controlling a light wave propagating through the optical waveguide, in which the optical waveguide and the electrode have an intersection in which the optical waveguide and the electrode intersect with each other, and at the intersection, the electrode has a multilayer structure including a plurality of metal layers made of a metal material, and a resin layer made of a resin material is formed between the electrode and the substrate.
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公开(公告)号：US20200310218A1
公开(公告)日：2020-10-01
申请号：US16665222
申请日：2019-10-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
Abstract: An optical modulator includes an optical modulation element having a plurality of signal electrodes; a plurality of signal input terminals each of which inputs an electrical signal to be applied to each signal electrode; a relay substrate on which a plurality of signal conductor patterns electrically connecting the signal input terminals and the signal electrodes, and a plurality of ground conductor patterns are formed; and a housing that houses the optical modulation element and the relay substrate, in which the relay substrate has at least one groove extending from the signal input side on which the signal input terminal is connected to the signal conductor pattern, in at least one ground conductor pattern formed between adjacent signal conductor patterns, and the groove is formed such that a length extending from the signal input side is longer than a length of the signal input terminal extending on the signal conductor pattern.
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公开(公告)号：US10788726B1
公开(公告)日：2020-09-29
申请号：US16665222
申请日：2019-10-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
Abstract: An optical modulator includes an optical modulation element having a plurality of signal electrodes; a plurality of signal input terminals each of which inputs an electrical signal to be applied to each signal electrode; a relay substrate on which a plurality of signal conductor patterns electrically connecting the signal input terminals and the signal electrodes, and a plurality of ground conductor patterns are formed; and a housing that houses the optical modulation element and the relay substrate, in which the relay substrate has at least one groove extending from the signal input side on which the signal input terminal is connected to the signal conductor pattern, in at least one ground conductor pattern formed between adjacent signal conductor patterns, and the groove is formed such that a length extending from the signal input side is longer than a length of the signal input terminal extending on the signal conductor pattern.
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公开(公告)号：US20200292909A1
公开(公告)日：2020-09-17
申请号：US16665218
申请日：2019-10-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
IPC: G02F1/225
Abstract: An optical modulator includes an optical modulation element having a plurality of signal electrodes; a housing that houses the optical modulation element; a plurality of signal input terminals each of which inputs an electrical signal to be applied to each of the signal electrodes; and a relay substrate on which a plurality of signal conductor patterns that electrically connect each of the signal input terminals to each of the signal electrodes, and a plurality of ground conductor patterns are formed, in which the relay substrate is housed in the housing, and at least one input side ground conductor pattern extending from at least one of the ground conductor patterns is formed on an input side surface having a side on which an electrical signal output from the signal input terminal is input to the signal conductor pattern as one side.
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公开(公告)号：US10698288B2
公开(公告)日：2020-06-30
申请号：US15884491
申请日：2018-01-31
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Norikazu Miyazaki , Toru Sugamata
IPC: G02F1/225 , G02F1/03 , H04B10/516 , H04B10/50
Abstract: Provided is an optical modulator in which an optical modulation element is accommodated in a housing. A plurality of lead pins, which are electrically connected to the optical modulation element through wire bonding, are fixed to the housing in a manner of protruding at least a part of each of the plurality of lead pins into the housing. In the plurality of lead pins, lengths of the lead pins are set to be different from each other so that a natural frequency of at least partial lead pins is different from a natural frequency of the other lead pins.
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Patent Agency Ranking
公开(公告)号：US10585251B2
公开(公告)日：2020-03-10
申请号：US16231608
申请日：2018-12-24
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
Abstract: An optical modulator and an optical transmission device using the same are provided. The optical modulator includes an optical waveguide substrate where an optical waveguide is formed; a light modulation element, provided in the optical waveguide substrate and including a modulation electrode applying an electric field corresponding to a modulation signal to the optical waveguide; a terminal substrate, disposed near the light modulation element and including terminal resistors that terminate the modulation signal, wherein the optical waveguide substrate, the light modulation element and the terminal substrate are accommodated in a housing; and a heat dissipation auxiliary element, provided between the terminal resistors and the housing. A distance b between the terminal resistors and the heat dissipation element is set to be shorter than a distance a from the terminal resistors to an end on the side of the optical waveguide substrate of the terminal substrate.
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公开(公告)号：US10477677B2
公开(公告)日：2019-11-12
申请号：US16086320
申请日：2016-09-15
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Ryo Shimizu , Toru Sugamata
Abstract: An optical modulator with FPC and optical transmission device using the same are provided. This optical modulator includes a flexible printed circuit which electrically connects the optical modulator to a circuit board. The flexible printed circuit has a substantially quadrilateral shape. A pad is formed on the flexible printed circuit along one side of the substantially quadrilateral shape so as to be electrically connected to the circuit board. In order to release the mechanical stress applied onto the side or the end portion of the flexible printed circuit and/or to prevent propagation of distortion generated in the side or the end portion, the flexible printed circuit has: a cutout or a notch provided in a direction from a part of at least one side toward the inside of the flexible printed circuit; and/or a curved portion connecting at least two adjacent sides.
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公开(公告)号：US10061179B2
公开(公告)日：2018-08-28
申请号：US15685224
申请日：2017-08-24
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Norikazu Miyazaki , Toru Sugamata
IPC: G02F1/035 , G02F1/225 , H04B10/50 , H04B10/516 , G02F1/21
CPC classification number: G02F1/2255 , G02F2001/212 , H04B10/501 , H04B10/505 , H04B10/516
Abstract: An optical modulator includes an optical modulation element including a plurality of signal electrodes and the like, a plurality of lead pins and the like for inputting radio frequency signals, and a relay substrate in which conductor patterns and the like that electrically connect the lead pins with the signal electrodes respectively are formed, the relay substrate is disposed so that a propagation direction of the radio frequency signals that have propagated through the lead pins is bent and guided to the conductor patterns, and the relay substrate is constituted so that widths of gaps between the plurality of conductor patterns in the optical modulator-side edge of the relay substrate is smaller than, preferably smaller than 50% of widths of gaps between the plurality of conductor patterns in the lead pin-side edge.
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29.发明公开公开(公告)号：US20240152021A1
公开(公告)日：2024-05-09
申请号：US18550475
申请日：2022-06-15
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
CPC classification number: G02F1/212 , G02F1/2255
Abstract: In an optical waveguide device having a plurality of intersections between a convex optical waveguide and a signal electrode, the occurrence of disturbance modulation at the intersections is effectively reduced, thereby achieving good operating characteristics. The optical waveguide device includes an optical waveguide composed of a protruding portion extending on the substrate, and a signal electrode formed on the substrate and controlling a light wave propagating through the optical waveguide. The optical waveguide includes a Mach-Zehnder optical waveguide including two parallel waveguides having a curved portions, the signal electrode includes two signal lines intersecting the two parallel waveguides at the curved portions and transmitting a differential signal, and each of the two signal lines is configured such that the intersection lengths on the two parallel waveguides are the same as each other.
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公开(公告)号：US11953767B2
公开(公告)日：2024-04-09
申请号：US17632627
申请日：2020-08-07
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toru Sugamata
CPC classification number: G02F1/035 , G02F1/0316 , G02F1/212
Abstract: An optical modulator includes a relay substrate having signal conductor patterns that connect signal input terminals and signal electrodes of an optical modulation element and ground conductor patterns, and a housing, in which the signal conductor pattern includes a component mounting portion including an electrical circuit element. Two ground conductor patterns sandwiching the signal conductor pattern are formed in an asymmetrical shape in a plan view within a component mounting area having a square shape in the plan view centered on the component mounting portion. A direction of a side of the component mounting area having the square shape is same as the extending direction of the signal conductor pattern and a length of a side of the component mounting area is equal to a distance from a center of the component mounting portion to a portion on an adjacent signal conductor pattern closest to the center.
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