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公开(公告)号：US20160011488A1
公开(公告)日：2016-01-14
申请号：US14710087
申请日：2015-05-12
Applicant: Fujitsu Optical Components Limited
Inventor： Masaki SUGIYAMA , Yoshinobu Kubota
IPC: G02F1/225 , H04B10/556
CPC classification number: G02F1/225 , G02F1/0121 , G02F2001/212 , G02F2201/18
Abstract: An optical module includes: a driver; an optical modulator; a connector that is electrically connected to either the driver or the optical modulator and is provided with an input/output terminal; and a flexible substrate that has flexibility, is connected to the connector, and transfers an electrical signal generated by the driver to the optical modulator, wherein in an end part connected to the connector, the flexible substrate has, on a first surface facing the input/output terminal, a signal-purpose wiring pattern used for transferring the electrical signal and a ground-purpose wiring pattern formed along the signal-purpose wiring pattern, and has, on a second surface that is different from the first surface, a ground electrode that partially covers the second surface and has a shorter electrical distance to the signal-purpose wiring pattern than an electrical distance between the signal-purpose wiring pattern and the ground-purpose wiring pattern.
Abstract translation: 光学模块包括：驱动器; 光调制器; 连接器，其电连接到驱动器或光学调制器，并且设置有输入/输出端子; 以及具有柔性的柔性基板连接到连接器，并将由驱动器产生的电信号传送到光调制器，其中在连接到连接器的端部中，柔性基板在面向输入端的第一表面上具有 /输出端子，用于传送电信号的信号用布线图案和沿着信号用布线图案形成的接地用布线图案，并且在与第一表面不同的第二表面上具有接地电极 其部分地覆盖第二表面并且具有比信号用布线图案和接地用布线图案之间的电距离更短的与信号用布线图案的电距离。
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公开(公告)号：US20150261017A1
公开(公告)日：2015-09-17
申请号：US14615603
申请日：2015-02-06
Applicant: Fujitsu Optical Components Limited
Inventor： Masaharu DOI , Yoshinobu Kubota , Yoshitada Kawashima , TERUHIRO KUBO
CPC classification number: H04B10/501 , G02B6/34 , G02F2001/133607 , H04B10/506
Abstract: A substrate is a substrate on which a first optical modulator and a second optical modulator are arranged in parallel along a width direction. A first prism moves, to a side opposite to the second optical modulator along the width direction of the substrate, an optical path of the first output light and the second output light that are obtained by light of the first wavelength being modulated by the first optical modulator. A second prism is arranged at a position away from the first prism along a longitudinal direction of the substrate and moves, to a side opposite to the first modulator along the width direction of the substrate, an optical path of the third output light and the fourth output light that are obtained by the light of the second wavelength being modulated by the second optical modulator.
Abstract translation: 衬底是沿着宽度方向平行布置第一光调制器和第二光调制器的衬底。 第一棱镜沿着基板的宽度方向移动到与第二光调制器相对的一侧，通过第一波长的光被第一光学器件调制的第一输出光和第二输出光的光路 调制器。 第二棱镜沿着基板的纵向布置在远离第一棱镜的位置处，沿着基板的宽度方向移动到与第一调制器相反的一侧，第三输出光和第四棱镜的光路 由第二波长的光获得的输出光由第二光调制器调制。
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公开(公告)号：US12242143B2
公开(公告)日：2025-03-04
申请号：US17699746
申请日：2022-03-21
Applicant: Fujitsu Optical Components Limited
Inventor： Yoshihiko Yoshida , Nobuaki Mitamura , Shuntaro Makino , Yoshinobu Kubota
Abstract: An optical device includes a silicon substrate, a waveguide formed of a thin film that is laminated on the silicon substrate and that is made of a perovskite oxide with a large electro-optic effect as compared to lithium niobate, and a cladding layer that covers the waveguide. Further, the optical device includes ground electrode that has a ground potential and a signal electrode that is arranged at a position facing the ground electrode and that applies driving voltage to the waveguide.
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公开(公告)号：US12153294B2
公开(公告)日：2024-11-26
申请号：US17947657
申请日：2022-09-19
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shuntaro Makino , Teruo Kurahashi , Yoshinobu Kubota , Yoshihiko Yoshida , Nobuaki Mitamura , Takehito Tanaka
IPC: G02F1/035
Abstract: An optical device includes a substrate, a first cladding layer that is laminated on one surface of the substrate, and a first optical waveguide that is formed in the first cladding layer at a side opposite to the substrate in the first cladding layer. The optical device further includes an electro-optic crystal layer that is laminated on a surface of the first cladding layer at a side opposite to the substrate, and a second optical waveguide that is formed of the electro-optic crystal layer on a surface of the electro-optic crystal layer at a side opposite to the first cladding layer. The optical device further includes a second cladding layer that is laminated on a surface of the electro-optic crystal layer at a side opposite to the first cladding layer.
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公开(公告)号：US12044910B2
公开(公告)日：2024-07-23
申请号：US17725944
申请日：2022-04-21
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shuntaro Makino , Yoshinobu Kubota , Yasuhiro Ohmori , Masaharu Doi , Masaki Sugiyama , Shintaro Takeuchi , Yoshihiko Yoshida , Shinji Maruyama , Teruo Kurahashi
CPC classification number: G02F1/0353 , G02F1/212 , G02F1/225 , G02F2202/20 , H04J14/02
Abstract: An optical device includes a thin film Lithium Niobate (LN) layer, a first optical waveguide, and a second optical waveguide. The thin film LN layer is an X-cut or a Y-cut LN layer. The first optical waveguide is an optical waveguide that is formed on the thin film LN layer along a direction that is substantially perpendicular to a Z direction of a crystal axis of the thin film LN layer. The second optical waveguide is an optical waveguide that is routed and connected to the first optical waveguide. At least a part of a core of the first optical waveguide is made thicker than a core of the second optical waveguide.
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Patent Agency Ranking
公开(公告)号：US12032268B2
公开(公告)日：2024-07-09
申请号：US17168842
申请日：2021-02-05
Applicant: Fujitsu Optical Components Limited
Inventor： Shinji Maruyama , Shuntaro Makino , Yoshimitsu Sakai , Yoshinobu Kubota
IPC: G02F1/31
CPC classification number: G02F1/31 , G02F2201/02 , G02F2202/20 , G02F2203/07
Abstract: An optical modulator in which an optical signal is input from one side of a package, includes in the package, a chip that optically modulates the optical signal and in which an input waveguide and an output waveguide of the optical signal are led to mutually different destinations each being one end of the chip facing the one side of the package and a side surface of the chip orthogonal to the one end of the chip; an input optical system coupled to the input waveguide of the chip; and an output optical system coupled to the output waveguide of the chip.
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公开(公告)号：US11693291B2
公开(公告)日：2023-07-04
申请号：US17169983
申请日：2021-02-08
Applicant: Fujitsu Optical Components Limited
Inventor： Shuntaro Makino , Yoshinobu Kubota , Yasuhiro Ohmori , Masaharu Doi , Shintaro Takeuchi
CPC classification number: G02F1/225 , G02B6/0065 , G02F1/0316 , G02F2201/07
Abstract: An optical waveguide device has a substrate, an intermediate layer, a thin-film LN layer containing an X-cut lithium niobate, and a buffer layer stacked on the substrate, and an optical waveguide having a ridge shape formed in the thin-film LN layer. The optical waveguide device includes a plurality of electrodes provided, respectively, at a first side and a second side of the optical waveguide. The electrodes are disposed so that respective bottom surfaces thereof are at positions lower than a position of a surface of the buffer layer.
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公开(公告)号：US11624965B2
公开(公告)日：2023-04-11
申请号：US17350627
申请日：2021-06-17
Applicant: Fujitsu Optical Components Limited
Inventor： Shuntaro Makino , Yoshinobu Kubota , Yasuhiro Ohmori , Masaharu Doi , Teruo Kurahashi
Abstract: An optical waveguide device includes an intermediate layer, a thin-film LN layer including X-cut lithium niobate, and a buffer layer stacked on a substrate; an optical waveguide formed in the thin-film LN layer; and an electrode for driving. The intermediate layer is formed by an upper first intermediate layer and a lower second intermediate layer, the second intermediate layer having a permittivity that is smaller than a permittivity of the first intermediate layer.
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公开(公告)号：US20210325760A1
公开(公告)日：2021-10-21
申请号：US17165562
申请日：2021-02-02
Applicant: Fujitsu Optical Components Limited
Inventor： Shuntaro Makino , Yoshinobu Kubota , Yasuhiro Ohmori , Masaharu Doi , Teruo Kurahashi , Shintaro Takeuchi
Abstract: An optical waveguide device includes a substrate on which an intermediate layer, a thin-film LN layer of lithium niobate, and a buffer layer are stacked; an optical waveguide formed in the thin-film LN layer; and a plurality of electrodes near the optical waveguide. The intermediate layer and the buffer layer contain a same material of a metal element of any one of group 3 of group 18 of a periodic table of elements.
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公开(公告)号：US20200271963A1
公开(公告)日：2020-08-27
申请号：US16799753
申请日：2020-02-24
Applicant: TDK Corporation , FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shinji Iwatsuka , Kenji Endou , Hiroki Hara , Toshinori Matsuura , Takashi Kikukawa , Yasuhiro Ohmori , Masaharu Doi , Shintaro Takeuchi , Takehito Tanaka , Yoshinobu Kubota
Abstract: An optical modulator is provided with a substrate, first and second optical waveguides each formed of a ridge-shaped electro-optic material film and disposed so as to be mutually adjacent on the substrate, a buffer layer covering upper surfaces of the first and second optical waveguides, first and second signal electrodes provided above the buffer layer so as to be opposed respectively to the first and second optical waveguides, and a dielectric layer covering at least one of a part of an exposed surface of the first signal electrode and a part of an exposed surface of the second signal electrode, and a part of an upper surface of the buffer layer. Differential signals are applied to the first and second signal electrodes.
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