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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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公开(公告)号：US11693290B2
公开(公告)日：2023-07-04
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
CPC classification number: G02F1/225 , G02F1/035 , G02F1/0316 , G02F2201/07 , G02F2201/12 , G02F2202/20
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：US09638927B2
公开(公告)日：2017-05-02
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.
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Patent Agency Ranking
公开(公告)号：US09638861B2
公开(公告)日：2017-05-02
申请号：US14631358
申请日：2015-02-25
Applicant: Fujitsu Optical Components Limited
Inventor： Shinji Maruyama , Seimi Sasaki , Kohei Shibata , Teruhiro Kubo , Shintaro Takeuchi , Hiroshi Kato , Takehito Tanaka
Abstract: A first lens transmits a beam of light having a vertical cross-sectional diameter made closer to a horizontal cross-sectional diameter. The beam of light is emitted from an optical waveguide on a substrate and configured such that the vertical cross-sectional diameter which is the diameter of a vertical cross section along the direction of the thickness of the substrate is greater than the horizontal cross-sectional diameter which is the diameter of a horizontal cross section along the direction of the width of the substrate. A second lens is disposed at a position, at which the vertical cross-sectional diameter and the horizontal cross-sectional diameter coincide with each other, so as to focus the beam of light on the optical fiber. The position is closer to the optical fiber than the first lens along the direction of travel of the beam of light transmitted by the first lens.
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公开(公告)号：US09461753B2
公开(公告)日：2016-10-04
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：US09448424B2
公开(公告)日：2016-09-20
申请号：US14629913
申请日：2015-02-24
Applicant: Fujitsu Optical Components Limited
Inventor： Kohei Shibata , Seimi Sasaki , Teruhiro Kubo , Shinji Maruyama , Shintaro Takeuchi , Hiroshi Kato , Takehito Tanaka
CPC classification number: G02F1/025 , G02B6/122 , G02B6/125 , G02B6/30 , G02B6/32 , G02B6/3897 , G02B6/4206 , G02B2006/12142
Abstract: An optical module connected to an optical fiber for transmitting light includes: a substrate; a ferrule that is formed from a material capable of transmitting therethrough light having a predetermined wavelength, accommodates an end of the optical fiber, and is fixed on the substrate with a fixing agent cured by being irradiated with the light capable of passing through the material; and a semiconductor chip that is disposed on the substrate and modulates light emitted from the end of the optical fiber accommodated in the ferrule.
Abstract translation: 连接到用于透射光的光纤的光学模块包括：基板; 由能够通过具有预定波长的光透射的材料形成的套圈，容纳光纤的端部，并且通过用能够穿过材料的光照射固化的固定剂固定在基板上; 以及半导体芯片，其设置在基板上并且调制从容纳在套圈中的光纤的端部发射的光。
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公开(公告)号：US20150253595A1
公开(公告)日：2015-09-10
申请号：US14629913
申请日：2015-02-24
Applicant: Fujitsu Optical Components Limited
Inventor： Kohei Shibata , Seimi Sasaki , Teruhiro Kubo , Shinji Maruyama , Shintaro Takeuchi , Hiroshi Kato , Takehito Tanaka
CPC classification number: G02F1/025 , G02B6/122 , G02B6/125 , G02B6/30 , G02B6/32 , G02B6/3897 , G02B6/4206 , G02B2006/12142
Abstract: An optical module connected to an optical fiber for transmitting light includes: a substrate; a ferrule that is formed from a material capable of transmitting therethrough light having a predetermined wavelength, accommodates an end of the optical fiber, and is fixed on the substrate with a fixing agent cured by being irradiated with the light capable of passing through the material; and a semiconductor chip that is disposed on the substrate and modulates light emitted from the end of the optical fiber accommodated in the ferrule.
Abstract translation: 连接到用于透射光的光纤的光学模块包括：基板; 由能够通过具有预定波长的光透射的材料形成的套圈，容纳光纤的端部，并且通过用能够穿过材料的光照射固化的固定剂固定在基板上; 以及半导体芯片，其设置在基板上并且调制从容纳在套圈中的光纤的端部发射的光。
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公开(公告)号：US20150253506A1
公开(公告)日：2015-09-10
申请号：US14631358
申请日：2015-02-25
Applicant: Fujitsu Optical Components Limited
Inventor： Shinji MARUYAMA , Seimi Sasaki , Kohei Shibata , Teruhiro Kubo , Shintaro Takeuchi , Hiroshi Kato , Takehito Tanaka
IPC: G02B6/32
Abstract: A first lens transmits a beam of light having a vertical cross-sectional diameter made closer to a horizontal cross-sectional diameter. The beam of light is emitted from an optical waveguide on a substrate and configured such that the vertical cross-sectional diameter which is the diameter of a vertical cross section along the direction of the thickness of the substrate is greater than the horizontal cross-sectional diameter which is the diameter of a horizontal cross section along the direction of the width of the substrate. A second lens is disposed at a position, at which the vertical cross-sectional diameter and the horizontal cross-sectional diameter coincide with each other, so as to focus the beam of light on the optical fiber. The position is closer to the optical fiber than the first lens along the direction of travel of the beam of light transmitted by the first lens.
Abstract translation: 第一透镜透射具有更接近水平横截面直径的垂直截面直径的光束。 光束从基板上的光波导发射，并且被构造为使得沿着基板的厚度方向的垂直截面的直径的垂直截面直径大于水平截面直径 其是沿着基板的宽度方向的水平横截面的直径。 第二透镜设置在垂直截面直径和水平横截面直径彼此重合的位置处，以将光束聚焦在光纤上。 沿着由第一透镜透射的光束的行进方向，位置比第一透镜更靠近光纤。
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