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公开(公告)号：US20200026146A1
公开(公告)日：2020-01-23
申请号：US16497943
申请日：2018-03-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD. , TOHOKU UNIVERSITY
Inventor： Tetsuya Fujino , Masayuki Motoya , Tetsuya Goto
IPC: G02F1/225
Abstract: In a waveguide-type optical modulation element that modulates light by applying radio frequency signals to an electrode, the realization of the additional broadening of the bandwidth by improving the degree of freedom in the design of the electrode is enabled. An optical modulation element, which includes optical waveguides provided in a substrate and electrodes that control light waves propagating through the optical waveguides and modulates light by propagating radio frequency signals to the electrodes, in which the electrodes include conductive layers made of copper or a copper alloy and protective layers made of a material other than copper and a copper alloy.
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公开(公告)号：US11940708B2
公开(公告)日：2024-03-26
申请号：US17599916
申请日：2019-09-26
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Kosuke Okahashi , Masayuki Motoya
CPC classification number: G02F1/2255 , G02F1/035 , G02F1/212
Abstract: Provided is an optical modulator that can be driven at lower voltage through the use of differential signal output. An optical modulator includes a substrate 1 and optical waveguides (21, 22) and a control electrode that are formed on the substrate, in which the optical waveguide includes Mach-Zehnder type optical waveguide, the control electrode is provided with two ground electrodes sandwiching three signal electrodes; the three signal electrodes are constituted by second and third signal electrodes that sandwich a first signal electrode, and have a wiring structure in which one modulation signal of the differential signal is applied to the first signal electrode, and the other modulation signal of the differential signal is applied to the second and third signal electrodes; and one branched waveguide (21) out of two Mach-Zehnder type optical waveguides is disposed between the first and second signal electrodes, and the other branched waveguide (22) is disposed between the first and third signal electrodes.
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13.发明申请公开(公告)号：US20230096004A1
公开(公告)日：2023-03-30
申请号：US17954304
申请日：2022-09-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Masayuki Motoya , Toshio Kataoka
IPC: G02F1/035
Abstract: An optical waveguide element includes a substrate having an electro-optic effect, an optical waveguide formed in the substrate, and a control electrode arranged on the substrate to modulate a light wave propagating through the optical waveguide. The control electrode includes a signal electrode and a ground electrode. The signal electrode and the ground electrode are arranged along a modulation effect portion of the optical waveguide that performs modulation. In a shape of a bottom surface of the ground electrode facing the substrate, a slit separating the ground electrode into a first ground electrode close to the signal electrode and a second ground electrode far from the signal electrode is formed in a range corresponding to the modulation effect portion.
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公开(公告)号：US20220381977A1
公开(公告)日：2022-12-01
申请号：US17827022
申请日：2022-05-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Masayuki Motoya , Shotaro Hirata , Kosuke Okahashi , Yu Kataoka , Shingo Takano
Abstract: There is provided an optical waveguide device including: a substrate; an optical waveguide formed on the substrate; and a working electrode that controls a light wave propagating through the optical waveguide, in which the working electrode includes a first base layer made of a first material, a first conductive layer on the first base layer, a second base layer made of a second material different from the first material, which is on the first conductive layer, and a second conductive layer on the second base layer, and an edge of the second base layer is covered with the second conductive layer, in a cross-section perpendicular to an extending direction of the optical waveguide.
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Patent Agency Ranking
公开(公告)号：US20220057661A1
公开(公告)日：2022-02-24
申请号：US17599717
申请日：2019-09-26
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Masayuki Motoya , Norikazu Miyazaki
IPC: G02F1/035
Abstract: In an optical modulation element using a thinly processed substrate, cracking of the substrate during electrical connection is prevented, and poor connection or a reduction in manufacturing yield is prevented. An optical waveguide element includes an optical substrate on which an optical waveguide and a conductor pattern are formed, and a support substrate that supports the optical substrate, in which the conductor pattern includes at least one electrical connection area defined as a range in which electrical connection is performed, the optical substrate has a substrate removal portion in which a material of the optical substrate has been removed to penetrate through the optical substrate at a portion corresponding to the electrical connection area, and at least a part of the electrical connection area is formed on the support substrate via the substrate removal portion.
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公开(公告)号：US10895765B2
公开(公告)日：2021-01-19
申请号：US16497943
申请日：2018-03-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD. , TOHOKU UNIVERSITY
Inventor： Tetsuya Fujino , Masayuki Motoya , Tetsuya Goto
Abstract: In a waveguide-type optical modulation element that modulates light by applying radio frequency signals to an electrode, the realization of the additional broadening of the bandwidth by improving the degree of freedom in the design of the electrode is enabled. An optical modulation element, which includes optical waveguides provided in a substrate and electrodes that control light waves propagating through the optical waveguides and modulates light by propagating radio frequency signals to the electrodes, in which the electrodes include conductive layers made of copper or a copper alloy and protective layers made of a material other than copper and a copper alloy.
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公开(公告)号：US09977270B2
公开(公告)日：2018-05-22
申请号：US15515098
申请日：2015-09-30
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yoshizumi Ishikawa , Youichi Hosokawa , Masayuki Motoya , Satoshi Oikawa
CPC classification number: G02F1/0316 , G02F1/01 , G02F1/035 , G02F1/0356 , G02F1/065 , G02F1/313 , G02F2201/46 , G02F2202/20
Abstract: An optical device is provided, which includes: an optical waveguide provided in a substrate having an electro-optic effect; a signal electrode provided on the substrate and above the optical waveguide; and a peeling prevention film which is provided on at least a part of an outer peripheral portion of the substrate and at a position spaced apart from the signal electrode, and also serves as a ground electrode.
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公开(公告)号：US09519200B2
公开(公告)日：2016-12-13
申请号：US14780526
申请日：2014-03-26
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Toshio Kataoka , Masayuki Motoya , Junichiro Ichikawa
CPC classification number: G02F1/2255 , G02F2001/212 , G02F2201/122 , G02F2201/127
Abstract: Provided is an optical control device including first and second optical waveguides, a first control signal electrode including a first input-side signal electrode, a second control signal electrode including a second input-side signal electrode, an inter-signal-electrode ground electrode, a first ground electrode, and a second ground electrode. The substrate has a first groove that is provided between the first input-side signal electrode and the inter-signal-electrode ground, a second groove that is provided between the first input-side signal electrode and the first ground electrode, a third groove that is provided between the second input-side signal electrode and the inter-signal-electrode ground electrode, and a fourth groove that is provided between the second input-side signal electrode and the second ground electrode.
Abstract translation: 提供了一种包括第一和第二光波导的光学控制装置，包括第一输入侧信号电极的第一控制信号电极，包括第二输入侧信号电极的第二控制信号电极，信号间电极接地电极， 第一接地电极和第二接地电极。 衬底具有设置在第一输入侧信号电极和信号间电极接地之间的第一槽，设置在第一输入侧信号电极和第一接地电极之间的第二槽，第三槽， 设置在第二输入侧信号电极和信号间电极接地电极之间，第四沟槽设置在第二输入侧信号电极和第二接地电极之间。
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公开(公告)号：US20160054637A1
公开(公告)日：2016-02-25
申请号：US14780526
申请日：2014-03-26
Applicant: SUMITOMO OSAKA CEMENT CO.,LTD.)
Inventor： Toshio Kataoka , Masayuki Motoya , Junichiro Ichikawa
IPC: G02F1/225
CPC classification number: G02F1/2255 , G02F2001/212 , G02F2201/122 , G02F2201/127
Abstract: Provided is an optical control device including first and second optical waveguides, a first control signal electrode including a first input-side signal electrode, a second control signal electrode including a second input-side signal electrode, an inter-signal-electrode ground electrode, a first ground electrode, and a second ground electrode. The substrate has a first groove that is provided between the first input-side signal electrode and the inter-signal-electrode ground, a second groove that is provided between the first input-side signal electrode and the first ground electrode, a third groove that is provided between the second input-side signal electrode and the inter-signal-electrode ground electrode, and a fourth groove that is provided between the second input-side signal electrode and the second ground electrode.
Abstract translation: 提供了一种包括第一和第二光波导的光学控制装置，包括第一输入侧信号电极的第一控制信号电极，包括第二输入侧信号电极的第二控制信号电极，信号间电极接地电极， 第一接地电极和第二接地电极。 衬底具有设置在第一输入侧信号电极和信号间电极接地之间的第一槽，设置在第一输入侧信号电极和第一接地电极之间的第二槽，第三槽， 设置在第二输入侧信号电极和信号间电极接地电极之间，第四沟槽设置在第二输入侧信号电极和第二接地电极之间。
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