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公开(公告)号：US20190302491A1
公开(公告)日：2019-10-03
申请号：US16367762
申请日：2019-03-28
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Yuji YAMANE , Tetsuya FUJINO , Hideki ICHIMEI
IPC: G02F1/035
Abstract: An optical control element including an optical waveguide formed by using diffusion of titanium that is formed on a lithium niobate substrate and a control electrode formed on the lithium niobate substrate that is provided in the vicinity of the optical waveguide, in which an amount of a hydroxyl group absorbed into the lithium niobate substrate is set to be in a range of 0.5 to 2.5 cm−1.
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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：US20190302490A1
公开(公告)日：2019-10-03
申请号：US16364449
申请日：2019-03-26
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Hideki ICHIMEI , Toshio KATAOKA
IPC: G02F1/035
Abstract: An optical waveguide device module includes an optical waveguide device and a connection substrate provided outside the optical waveguide device, and these are housed in a housing. The optical waveguide device has a control electrode including a signal electrode and ground electrodes disposed to interpose the signal electrode between the ground electrodes. A signal line, ground lines disposed so as to interpose the signal line between the ground lines, and a back surface ground electrode disposed on a surface of the connection substrate are provided on the connection substrate. The ground line and the back surface ground electrode are electrically connected through a via hole passing through the connection substrate. Electrical connection means for electrically connecting the ground line and the ground electrode is provided. A connection portion of the electrical connection means on the ground line side is in the vicinity of the via hole of the ground line.
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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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Patent Agency Ranking
公开(公告)号：US20230350235A1
公开(公告)日：2023-11-02
申请号：US18025843
申请日：2022-01-26
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hideki ICHIMEI , Minoru SHINOZAKI , Yu KATAOKA
IPC: G02F1/01
CPC classification number: G02F1/0113 , G02F1/0102 , G02F1/0121
Abstract: An optical modulator with which electrical connection between a signal electrode and signal wiring of a wiring substrate can be reliably made even in a case where a width of the signal electrode in an action portion of an optical control substrate is narrow is provided. An optical modulator includes an optical control substrate (1) that includes an optical waveguide (OW) including at least a branched waveguide which branches one light wave into two light waves, and that includes a control electrode for applying an electrical field to the branched waveguide, and a wiring substrate provided with a wiring which relays an electrical signal to be applied to the control electrode or with a wiring which terminates the electrical signal, in which the control electrode is provided with a signal electrode (S), the wiring is provided with signal wiring, and in a part (Sc) in which electrical connection is made between the signal electrode (S) and the signal wiring, a clearance (W1) in which the branched waveguide (OW) sandwiches the signal electrode is wider than a clearance (W2) in which the branched waveguide sandwiches the signal electrode in an action portion in which the control electrode applies the electrical field to the branched waveguide.
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6.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：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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8.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：US20200292752A1
公开(公告)日：2020-09-17
申请号：US16697219
申请日：2019-11-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuji YAMANE , Norikazu MIYAZAKI , Yu Kataoka , Hideki ICHIMEI
Abstract: An optical waveguide element includes an optical waveguide which is formed on one surface of a substrate, an incidence part for light to be incident on the optical waveguide or an emission part for emitting light from the optical waveguide which is disposed in an end portion of the substrate, and a dielectric film which is formed on the optical waveguide of at least one of the incidence part and the emission part, and the vicinity thereof. Regarding the dielectric film, dielectric films including a dielectric film formed of a first material having an index of refraction higher than an index of refraction of the substrate and a dielectric film formed of a second material having an index of refraction lower than the index of refraction of the substrate are alternately laminated.
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