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公开(公告)号：US20190271809A1
公开(公告)日：2019-09-05
申请号：US16290969
申请日：2019-03-04
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kei KATO , Norikazu MIYAZAKI
Abstract: An optical modulator capable of curbing deterioration of transmission properties due to deformation of a housing is provided. Provided is an optical modulator including a substrate (10) on which an optical waveguide (20) is formed and a housing (30) that accommodates the substrate, in which the optical waveguide includes mode conversion branching portions (21, 22) which convert a mode of light waves propagating through the optical waveguide and branch the light waves, a mounting portion (32) protruding from a surface (31) inside the housing and holding the substrate is formed, and the substrate is fixed to the mounting portion in an arrangement in which a fixed end (33) between the substrate and the mounting portion is positioned outside a region including the mode conversion branching portions when the substrate is seen in a plan view.
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公开(公告)号：US20230367143A1
公开(公告)日：2023-11-16
申请号：US18029242
申请日：2022-01-14
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kei KATO , Hideki ICHIMEI
IPC: G02F1/01
CPC classification number: G02F1/011 , G02F2201/50
Abstract: An optical modulator that suppresses poor welding between a case main body and a lid portion is provided. There is provided an optical modulator including: a case that is a rectangular parallelepiped and accommodates at least an optical waveguide element, in which the case includes a case main body 1 in which one surface of the rectangular parallelepiped forms an opening portion, and a lid portion 2 that has a rectangular shape and that closes the opening portion, the lid portion includes a peripheral part that has a thin thickness, and a protruding part 20 that is formed on the lid portion excluding the peripheral part and that protrudes toward an inside of the case, and when the lid portion is fitted into the case main body, a distance between an inner peripheral side of an end surface forming the opening portion of the case main body and an outer edge of the protruding part is set such that a distance d1 formed on a short-side side of the lid portion is larger than a distance d2 formed on a long-side side of the lid portion.
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3.发明申请公开(公告)号：US20210302679A1
公开(公告)日：2021-09-30
申请号：US17213517
申请日：2021-03-26
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kei KATO , Hideki ICHIMEI , Norikazu MIYAZAKI
Abstract: An optical waveguide device includes a substrate on which an optical waveguide is formed, and a reinforcing block disposed on the substrate, along an end surface of the substrate on which an input portion or an output portion of the optical waveguide is disposed, in which an optical component that is joined to both the end surface of the substrate and an end surface of the reinforcing block is provided, a material used for a joining surface of the optical component and a material used for the substrate or the reinforcing block have at least different linear expansion coefficients of a direction parallel to the joining surface, and an area of a joining portion of the optical component is set to be smaller than an area of the end surfaces including joining portions of the substrate and the reinforcing block.
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公开(公告)号：US20170299940A1
公开(公告)日：2017-10-19
申请号：US15516028
申请日：2016-04-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Toshio KATAOKA , Kei KATO
CPC classification number: G02F1/2257 , G02B6/125 , G02B6/243 , G02B2006/12142 , G02F1/0123 , G02F2001/212
Abstract: The objective of the present invention is to provide an optical modulator adapted for use with various modulating units and various modulation regions, and with which variability in optical losses is limited as far as possible. An optical modulator in which an optical waveguide and a control electrode for controlling an optical wave propagating through the optical waveguide are provided in a substrate, characterized in that: the optical waveguide is provided with a first branching portion which causes one input light beam to branch into two light beams; each of a first and a second modulating portion connected to two branched waveguides which branch at the first branching portion is provided with a structure in which one or more Mach-Zehnder type optical waveguides are combined; the control electrode comprises signal electrodes which apply modulated signals to the first and second modulating portions; input portions of all the signal electrodes are disposed on either the left or the right of the substrate relative to the direction in which the optical wave propagates; and in relation to output portions of the signal electrodes, the output portions of the signal electrodes led out from each modulating portion are disposed on the side on which the first or second modulating portions are disposed, relative to the direction in which the optical wave propagates.
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Patent Agency Ranking
公开(公告)号：US20230314737A1
公开(公告)日：2023-10-05
申请号：US18126904
申请日：2023-03-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kei KATO , Hideki ICHIMEI
IPC: G02B6/42
CPC classification number: G02B6/4256
Abstract: An optical device includes a housing that accommodates at least an optical waveguide element, a main body portion 1 of the housing having an opening portion OP on one surface and a lead pin PN1 fixed to a side surface adjacent to the one surface, and including a metal member 2 disposed to surround the opening portion OP and a lid member 11 that closes the opening portion OP and is joined to the metal member 2, in which end portions of the metal member 2 and the lid member 11 along the side surface of the main body portion 1 at which the lead pin PN1 is disposed are located on an inner side of the main body portion 1 than the side surface of the main body portion 1.
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公开(公告)号：US20240310584A1
公开(公告)日：2024-09-19
申请号：US18028466
申请日：2021-09-30
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hideki ICHIMEI , Kei KATO
Abstract: An object is to provide an optical device for which size reduction can be achieved, and for which an increase in manufacturing cost is suppressed. An optical device of the present invention is an optical device in which an optical component is accommodated inside a case, the optical device including an optical component fixing member OF on which the optical component is mounted, in which a side surface portion CS and a bottom surface portion CB of the case are joined, and the optical component fixing member OF abuts on the side surface portion CS and is joined to the bottom surface portion CB.
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7.发明申请公开(公告)号：US20210302765A1
公开(公告)日：2021-09-30
申请号：US17212971
申请日：2021-03-25
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hideki ICHIMEI , Kei KATO , Norikazu MIYAZAKI
Abstract: An optical waveguide device includes a substrate on which an optical waveguide is formed, and a reinforcing block disposed on the substrate, along an end surface of the substrate on which an input portion or an output portion of the optical waveguide is disposed, in which an optical component that is joined to both the end surface of the substrate and an end surface of the reinforcing block is provided, a material used for a joining surface of the optical component and a material used for the substrate or the reinforcing block have at least different linear expansion coefficients of a direction parallel to the joining surface, and an area of the joining surface is set to be smaller than a maximum value of a total of areas of cross sections of the substrate and the reinforcing block parallel to the joining surface.
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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：US20180095302A1
公开(公告)日：2018-04-05
申请号：US15719583
申请日：2017-09-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kei KATO , Norikazu MIYAZAKI , Ryo SHIMIZU
IPC: G02F1/01
CPC classification number: G02F1/0102 , G02F1/011 , G02F2201/12
Abstract: Provided is an optical modulator module in which a modulation substrate having a plurality of optical modulation units is stored inside a package case. The optical modulator module includes a plurality of signal supply lines configured to supply a modulation signal to the optical modulation unit through a connector terminal which is introduced into the package case. At least two or more of the plurality of signal supply lines are set such that the signal supply lines have overall electrical lengths which are different from each other. A particular part of the signal supply line employs at least one of the following configurations (a) and (b): (a) setting the signal supply line having a longer overall electrical length to have a wider cross-sectional area of a surface perpendicular to a direction in which the modulation signal propagates; and (b) setting a cross-sectional area of the particular part to be wider than cross-sectional areas of parts other than the particular part and setting the signal supply line having a longer overall electrical length to have the particular part increased in length.
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