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公开(公告)号：US20210026167A1
公开(公告)日：2021-01-28
申请号：US17042816
申请日：2019-02-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuki KUGIMOTO , Yoichi HOSOKAWA
IPC: G02F1/035
Abstract: Provided is an optical modulator that includes an adhesive layer whose thickness can be reduced and that ensures high reliability, while band-widening and low voltage drive are realized.
An optical modulator includes features as follows: a substrate (optical waveguide substrate) having an electro-optic effect; an optical waveguide formed on the substrate; and a traveling-wave electrode (signal electrode and ground electrode) formed on the substrate in order to modulate a light wave propagating through the optical waveguide, in which the substrate has a thickness of 30 μm or lower, a reinforcing substrate that holds the substrate through an adhesive layer interposed between the reinforcing substrate and the substrate is provided, and the adhesive layer includes an air gap section where no adhesive agent is present.-
2.发明公开公开(公告)号：US20240230993A9
公开(公告)日：2024-07-11
申请号：US18279021
申请日：2021-09-30
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yumi MURATA , Yuki KUGIMOTO
IPC: G02B6/122
CPC classification number: G02B6/1228 , G02B2006/12097
Abstract: An optical waveguide device in which an optical loss is reduced by removing an air bubble inside an adhesive layer for joining a reinforcing member from near an optical waveguide or the like even in a case where a protruding part such as a rib type optical waveguide or a spot size converter is formed on an optical waveguide substrate is provided. An optical waveguide device includes an optical waveguide substrate (1, 2) provided with an optical waveguide (10, 12), and a reinforcing member (3) disposed on an upper side of the optical waveguide (10, 12) near an end portion of the optical waveguide (10, 12), the optical waveguide substrate (1, 2) and the reinforcing member (3) being joined through an adhesive layer (4), in which a protective layer (13) that covers the optical waveguide (10, 12) is provided on the optical waveguide (10, 12) positioned on a lower side of the reinforcing member (3), and the adhesive layer (4) is disposed outside the protective layer (13).
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公开(公告)号：US20240176071A1
公开(公告)日：2024-05-30
申请号：US18283764
申请日：2022-03-30
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Junji ARAI , Yumi MURATA , Yuki KUGIMOTO
CPC classification number: G02B6/122 , G02B2006/12142
Abstract: Provided is an optical waveguide element whereby it is possible to prevent dropout of an optical component due to internal stress that occurs in a joint between the optical component and an optical waveguide member including a substrate on which an optical waveguide is formed, and to simplify a manufacturing step pertaining to polishing of a joining surface. An optical waveguide element comprising: an optical waveguide member including a substrate 1 on which an optical waveguide is formed; and an optical component 3 that is fixed to an optical waveguide member end surface (B0) on which an input part or an output part of the optical waveguide is disposed, and that transmits input light inputted to the input part or transmits output light outputted from the output part, wherein the optical waveguide element is characterized in that portions (B1, B2) having greater roughness than the end surface (B0) of the optical waveguide member including the input part or the output part are provided in at least a portion of the optical waveguide member, which is the portion thereof to which the optical component 3 is fixed.
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4.发明公开公开(公告)号：US20240134117A1
公开(公告)日：2024-04-25
申请号：US18279021
申请日：2021-09-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yumi MURATA , Yuki KUGIMOTO
IPC: G02B6/122
CPC classification number: G02B6/1228 , G02B2006/12097
Abstract: An optical waveguide device in which an optical loss is reduced by removing an air bubble inside an adhesive layer for joining a reinforcing member from near an optical waveguide or the like even in a case where a protruding part such as a rib type optical waveguide or a spot size converter is formed on an optical waveguide substrate is provided. An optical waveguide device includes an optical waveguide substrate (1, 2) provided with an optical waveguide (10, 12), and a reinforcing member (3) disposed on an upper side of the optical waveguide (10, 12) near an end portion of the optical waveguide (10, 12), the optical waveguide substrate (1, 2) and the reinforcing member (3) being joined through an adhesive layer (4), in which a protective layer (13) that covers the optical waveguide (10, 12) is provided on the optical waveguide (10, 12) positioned on a lower side of the reinforcing member (3), and the adhesive layer (4) is disposed outside the protective layer (13).
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公开(公告)号：US20250155637A1
公开(公告)日：2025-05-15
申请号：US18840692
申请日：2022-02-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yumi MURATA , Junji ARAI , Yuki KUGIMOTO
Abstract: An object of the present invention is to provide an optical waveguide device capable of appropriately setting a positional relationship between an optical waveguide substrate and a reinforcing member. An optical waveguide device includes an optical waveguide substrate 11 provided with an optical waveguide 10; and a reinforcing member 2 disposed on an upper side of the optical waveguide near an end portion of the optical waveguide, the optical waveguide substrate and the reinforcing member being joined through an adhesive layer 3, in which spacers (SP1, SP2) are disposed between the optical waveguide substrate and the reinforcing member to interpose the optical waveguide between the spacers.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230152539A1
公开(公告)日：2023-05-18
申请号：US17916505
申请日：2020-12-18
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuki KUGIMOTO , Norikazu MIYAZAKI , Yu KATAOKA
IPC: G02B6/42
CPC classification number: G02B6/4257 , G02B6/4239
Abstract: To provide an optical waveguide device in which damage to a thin plate, particularly damage to an optical waveguide, is prevented. An optical waveguide device includes: a thin plate 1 that has an electro-optic effect and that has a thickness of equal to or thinner than 10 μm, an optical waveguide 2 being formed on the thin plate; and a reinforcing substrate that supports the thin plate, in which the thin plate 1 has a rectangular shape in a plan view, a dissimilar element layer 3, in which an element different from an element constituting the thin plate is disposed in the thin plate, is formed on at least a portion between an outer periphery of the thin plate and the optical waveguide 2, and a total length over which a cleavage plane of the thin plate traverses a region where the dissimilar element layer is formed, is equal to or longer than 5% of a width of the thin plate in a short side direction.
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公开(公告)号：US20190302355A1
公开(公告)日：2019-10-03
申请号：US16367726
申请日：2019-03-28
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Shingo TAKANO , Yuki KUGIMOTO , Yoshizumi ISHIKAWA
Abstract: An optical device including a core layer that includes an EO polymer, and clad layers that are disposed on and beneath the core layer, in which a polymer polymerized in a composition containing a reactive ionic liquid is used in the clad layers.
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8.发明公开公开(公告)号：US20240310663A1
公开(公告)日：2024-09-19
申请号：US18268070
申请日：2021-12-22
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuki KUGIMOTO , Yu KATAOKA , Shingo TAKANO
IPC: G02F1/035
CPC classification number: G02F1/035 , G02F2201/063
Abstract: Provided is an optical waveguide element that can suppress insertion loss related to coupling to an optical fiber or the like while achieving a reduction in size of an optical waveguide element, and has a SSC structure with high light resistance, heat resistance, or manufacturing efficiency. An optical waveguide element includes an optical waveguide substrate 1 having a rib-type optical waveguide 10 formed of a material having an electro-optic effect, and a holding member 2 that is disposed and fixed at a position where an input end or an output end of the rib-type optical waveguide is formed, to overlap the optical waveguide substrate, in which another optical waveguide 20 with a mode field diameter greater than that of the rib-type optical waveguide is formed on a surface of the holding member facing the rib-type optical waveguide, and the optical waveguide substrate and the holding member are bonded through an adhesive layer 30.
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公开(公告)号：US20240069281A1
公开(公告)日：2024-02-29
申请号：US18270168
申请日：2021-12-22
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuki KUGIMOTO , Yumi MURATA , Yu KATAOKA , Shingo TAKANO
IPC: G02B6/122
CPC classification number: G02B6/1228 , G02B2006/12142
Abstract: Provided is an optical waveguide element including spot size conversion means with suppressed optical insertion loss without complicating a manufacturing process. An optical waveguide element includes an optical waveguide substrate (4) having a rib-type optical waveguide (10) formed of a material having an electro-optic effect, and spot size conversion means for changing a mode field diameter of a light wave propagating through the optical waveguide at a position where an input end or an output end of the rib-type optical waveguide (10) is formed, in which the spot size conversion means includes a first configuration layer (1) that is connected to the rib-type optical waveguide (10) and includes a tapered portion (11) in which a width of the optical waveguide expands, a second configuration layer (2) that is laminated on the first configuration layer (1) and has a width narrower than a width of the first configuration layer (1), and a third configuration layer (3) that is disposed to cover the second configuration layer (2) excluding a part of the second configuration layer (2) close to the rib-type optical waveguide and has a width wider than the width of the second configuration layer (2).
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公开(公告)号：US20210199996A1
公开(公告)日：2021-07-01
申请号：US17129576
申请日：2020-12-21
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Yuki KUGIMOTO , Yumi MURATA , Katsutoshi KONDO
Abstract: An optical waveguide device including an optical waveguide substrate that has an electro-optic effect, is a crystal having anisotropy in thermal expansion rate, has a thickness set to 10 μm or lower, and includes an optical waveguide and a holding substrate that holds the optical waveguide substrate, the optical waveguide substrate and the holding substrate being joined to each other, in which the holding substrate is formed of a crystal having a lower dielectric constant than the optical waveguide substrate and having anisotropy in thermal expansion rate, and the optical waveguide substrate and the holding substrate are joined to each other such that differences in thermal expansion rate between the optical waveguide substrate and the holding substrate become small in different axial directions on a joint surface.
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