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公开(公告)号：US20150253582A1
公开(公告)日：2015-09-10
申请号：US14617238
申请日：2015-02-09
Applicant: Fujitsu Optical Components Limited
Inventor： Seimi SASAKI , Kohei SHIBATA , Teruhiro KUBO , Shinji MARUYAMA , Shintaro TAKEUCHI , Hiroshi KATO , Takehito TANAKA
CPC classification number: G02B27/283 , G02B7/1805 , G02B27/286 , G02F1/025
Abstract: A polarization combiner includes: a base member that includes a body portion, an arm portion extending from the body portion, and a notch portion surrounded with the body portion and the arm portion; a polarization rotating element that is fixed to the arm portion of the base member and that rotates a polarization direction of a first polarized wave; and a polarization combining element that is fixed to the base member so as to face the notch portion of the base member and the polarization rotating element, the polarization combining element combining two polarized waves entering from a surface facing the notch portion and the polarization rotating element, the two polarized waves including the first polarized wave whose polarization direction is rotated by the polarization rotating element and a second polarized wave passing the notch portion.
Abstract translation: 偏振组合器包括：基部构件，其包括主体部分，从主体部分延伸的臂部分和由主体部分和臂部分围绕的切口部分; 偏振旋转元件，其固定到所述基座的臂部，并且旋转第一偏振波的偏振方向; 以及偏振组合元件，其固定到所述基底构件以面对所述基底构件和所述偏振旋转元件的所述切口部分，所述偏振组合元件组合从面向所述切口部分的表面进入的两个偏振波和所述偏振旋转元件 包括偏振方向由偏振旋转元件旋转的第一偏振波和通过切口部的第二偏振波的两个偏振波。
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公开(公告)号：US20150139667A1
公开(公告)日：2015-05-21
申请号：US14607576
申请日：2015-01-28
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shintaro TAKEUCHI , Takehito TANAKA
CPC classification number: H04B10/613 , G02F1/0147 , G02F1/225 , G02F2203/48 , H04B10/25 , H04B10/611 , H04B10/614 , H04B10/6162
Abstract: An optical receiver circuit includes a polarization beam splitter configured to split input signal light into two different polarized wave components; two variable optical attenuators configured to respectively adjust attenuation of and output the signal light split by the polarization beam splitter according to polarization state; and a single planar optical waveguide on which the polarization beam splitter and the two variable optical attenuators are disposed.
Abstract translation: 光接收器电路包括被配置为将输入信号光分成两个不同偏振波分量的偏振分束器; 两个可变光衰减器，被配置为分别根据偏振状态调节由偏振分束器分离的信号光的衰减和输出; 以及设置偏振分束器和两个可变光衰减器的单个平面光波导。
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公开(公告)号：US20200310216A1
公开(公告)日：2020-10-01
申请号：US16832784
申请日：2020-03-27
Applicant: TDK Corporation , FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shinji IWATSUKA , Kenji SASAKI , Hiroki HARA , Yasuhiro OHMORI , Masaharu DOI , Shintaro TAKEUCHI , Yoshihiko YOSHIDA , Yoshinobu KUBOTA
Abstract: An electro-optic device is provided with a substrate, an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate, and an electrode that applies an electric field to the optical waveguide. The optical waveguide includes a first waveguide section provided at least in an electric field application region applied with the electric field and having a thickness of 1 μm or larger and a second waveguide section provided in a region other than the electric field application region and having a thickness of 0.3 μm or larger and less than 1 μm.
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公开(公告)号：US20200272020A1
公开(公告)日：2020-08-27
申请号：US16799763
申请日：2020-02-24
Applicant: FUJITSU OPTICAL COMPONENTS LIMITED , TDK Corporation
Inventor： Yasuhiro OHMORI , Masaharu DOI , Shintaro TAKEUCHI , Takehito TANAKA , Yoshinobu KUBOTA , Shinji IWATSUKA , Kenji ENDOU , Hiroki HARA , Toshinori MATSUURA , Takashi KIKUKAWA
Abstract: An optical modulator is provided with a ridge-shaped optical waveguide formed of a dielectric thin film having electro-optic effect, a buffer layer covering the optical waveguide, a signal electrode formed on the buffer layer so as to be opposed to the optical waveguide through the buffer layer; a ground electrode formed on the buffer layer together with the signal electrode, and a dielectric film having a higher dielectric constant than air and covering at least a part of exposed surfaces of the signal electrode and ground electrode and exposed surfaces of the buffer layer.
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公开(公告)号：US20210325761A1
公开(公告)日：2021-10-21
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
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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Patent Agency Ranking
公开(公告)号：US20200041824A1
公开(公告)日：2020-02-06
申请号：US16515573
申请日：2019-07-18
Applicant: Fujitsu Optical Components Limited
Inventor： Yasuhiro OHMORI , Yoshinobu KUBOTA , Masaharu DOI , Shintaro TAKEUCHI , Yoshihiko YOSHIDA
Abstract: An optical modulator includes an optical waveguide of a ridge type formed of a thin film of a dielectric material having an electro-optic effect over a substrate, a buffer layer covering the optical waveguide, and a signal electrode provided over the optical waveguide via the buffer layer, wherein a width of the signal electrode is greater than a ridge width of the optical waveguide and wherein the signal electrode covers at least one of sidewalls of a ridge of the optical waveguide.
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公开(公告)号：US20230004028A1
公开(公告)日：2023-01-05
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
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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公开(公告)号：US20210103165A1
公开(公告)日：2021-04-08
申请号：US16832647
申请日：2020-03-27
Applicant: TDK Corporation , FUJITSU OPTICAL COMPONENTS LIMITED
Inventor： Shinji IWATSUKA , Kenji SASAKI , Hiroki HARA , Yasuhiro OHMORI , Masaharu DOI , Shintaro TAKEUCHI , Yoshihiko YOSHIDA , Yoshinobu KUBOTA
Abstract: An electro-optic device is provided with a substrate, an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate, and an electrode that applies an electric field to the optical waveguide. The optical waveguide includes a modulation waveguide provided in an electric field application region applied with the electric field and having a thickness of 1 μm or larger and a bent waveguide provided in a region other than the electric field application region and having a curvature radius of 16 μm or larger and 80 μm or smaller.
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公开(公告)号：US20180081251A1
公开(公告)日：2018-03-22
申请号：US15647719
申请日：2017-07-12
Applicant: Fujitsu Optical Components Limited
Inventor： Shintaro TAKEUCHI , YOSHIHIKO YOSHIDA , Yoshinobu Kubota , Masaharu Doi , Yasuhiro Ohmori
IPC: G02F1/225
CPC classification number: G02F1/225 , G02F2001/212 , G02F2201/06
Abstract: An optical modulator includes a substrate and an optical waveguide group. The optical waveguide group includes a pair of relay optical waveguides, a pair of first Mach-Zehnder type optical waveguides, and a pair of second Mach-Zehnder type optical waveguides. The pair of the first Mach-Zehnder type optical waveguides are connected to the pair of the relay optical waveguides and includes input ends arranged at positions that deviate from each other in a longitudinal direction of the substrate. The pair of the second Mach-Zehnder type optical waveguides are provided on a pair of branched waveguides of each of the first Mach-Zehnder type optical waveguides and includes input ends arranged at symmetric positions with respect to a straight line that passes through an input end serving as a branch point of the branched waveguides and that extends in the longitudinal direction of the substrate.
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公开(公告)号：US20150253521A1
公开(公告)日：2015-09-10
申请号：US14629899
申请日：2015-02-24
Applicant: Fujitsu Optical Components Limited
Inventor： Shinji MARUYAMA , Seimi SASAKI , Kohei SHIBATA , Teruhiro KUBO , Shintaro TAKEUCHI , Hiroshi KATO , Takehito TANAKA
IPC: G02B6/42
CPC classification number: G02B6/4244 , G02F1/225 , G02F2201/18 , G02F2201/58 , G02F2203/28
Abstract: An optical transmitting apparatus includes: a substrate; optical modulators that are arranged in parallel to one another on the substrate and modulate light; waveguides that are formed on the substrate and guide signal light represented by at least one of modulated light beams obtained by the light being modulated by the plurality of optical modulators and monitor light represented by at least another one of the modulated light beams other than the signal light; lenses that collimate the signal light and the monitor light emitted from the waveguides; and a holding member that causes the signal light and the monitor light to be emitted from the lenses in mutually-different directions, by holding the lenses in such a manner that the optical axis of at least one of the lenses is out of alignment in a predetermined direction with the optical axis of at least one of the waveguides.
Abstract translation: 光发送装置包括：基板; 在衬底上彼此平行布置并调制光的光学调制器; 形成在基板上的波导，并且引导由由多个光调制器调制的光获得的调制光束中的至少一个所表示的信号光，并且监视由除信号之外的至少另一个调制光束表示的光 光; 准直信号光和从波导发射的监视光的透镜; 以及保持构件，其通过以这样的方式保持透镜来使信号光和监视光从透镜发射在相互不同的方向上，使得至少一个透镜的光轴在 预定方向与至少一个波导的光轴。
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