-
公开(公告)号：US10466513B2
公开(公告)日：2019-11-05
申请号：US15755764
申请日：2016-09-27
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Toshio Kataoka , Junichiro Ichikawa
Abstract: Provided is an optical waveguide device in which destabilization of a DC bias which is applied to an optical waveguide, due to a bias electrode picking up electric noise, is reduced and an operating characteristic is stable.An optical waveguide device includes: a substrate having an electro-optic effect; an optical waveguide formed on the substrate; a modulation electrode for applying an electric field corresponding to a modulation signal to the optical waveguide; and a bias electrode for applying an electric field corresponding to a DC bias to the optical waveguide, in which in order to reduce capture of electric noise by the bias electrode, with respect to at least a part of the bias electrode, a plurality of electrode portions (b11, b12) are formed in at least one (B1) of the pair of electrodes by folding back one electric line.
-
公开(公告)号：US10126505B2
公开(公告)日：2018-11-13
申请号：US15893742
申请日：2018-02-12
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Tokutaka Hara , Toshio Kataoka
Abstract: An optical element module includes an optical modulation element having first and second optical modulator units, a polarization combining means for combining two modulated lights which are emitted from the first and second optical modulator units, by making planes of polarization orthogonally cross each other; a housing which houses the optical modulation element and the polarization combining means; and a lens holder which holds a collimating lens which is disposed between the polarization combining means and an optical fiber, with the lens holder further holding the optical fiber. The optical element module is configured by joining the housing and the lens holder together by welding. In the lens holder, an outer diameter of a welding place is smaller than an outer diameter of a part which holds the collimating lens.
-
公开(公告)号：US10067403B2
公开(公告)日：2018-09-04
申请号：US15504292
申请日：2015-08-31
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Toshio Kataoka , Junichiro Ichikawa
IPC: G02F1/313
Abstract: Provided is an optical modulator including: a relay substrate; a first transmission line that is provided on a flat surface of the relay substrate, and transmits, along the flat surface of the relay substrate, an electrical signal that has been input from an outer side; a second transmission line that is provided in the relay substrate, and transmits the electrical signal in a direction that is not included in the flat surface; a modulation unit that modulates an optical signal by using the electrical signal that is transmitted by the first transmission line and the second transmission line; and a shield that shields a radiation component of the electrical signal that is radiated from a contact of the first transmission line and the second transmission line.
-
公开(公告)号：US20180120666A1
公开(公告)日：2018-05-03
申请号：US15509692
申请日：2016-03-09
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Katsutoshi Kondou , Junichiro Ichikawa , Toshio Kataoka
CPC classification number: G02F1/2257 , G02F1/035 , G02F1/225 , G02F1/2255 , G02F2001/212 , H01P3/003
Abstract: In a waveguide-type optical element, broaderband operation becomes possible.The waveguide-type optical element includes optical waveguides (110 and 112) formed on a substrate (100) having an electro-optic effect and a control electrode for controlling an optical wave that is transmitted through the optical waveguide, the control electrode comprises a central electrode (104) and ground electrodes (106 and 108), the central electrode being formed along the optical waveguide, and the ground electrodes being formed so as to put the central electrode therebetween in a surface direction of the substrate at a predetermined distance from the central electrode, and the central electrode or the ground electrodes have multiple pairs of facets, each comprising two facets facing each other, along a transmission direction of high-frequency signals that are transmitted through the central electrode and the ground electrodes.
-
公开(公告)号：US09523872B2
公开(公告)日：2016-12-20
申请号：US15082003
申请日：2016-03-28
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Toshio Kataoka , Norikazu Miyazaki , Youichi Hosokawa
CPC classification number: G02F1/0316 , G02B6/00 , G02B6/12 , G02F1/025 , G02F1/0356 , G02F1/2255 , G02F2201/121
Abstract: [Task] Reduction in crosstalk between signal electrodes.[Means for Resolution] An optical modulator 1 includes a relay substrate 3 including a substrate portion 30, and signal electrodes 31 and 32, and a ground electrode 33 which are provided on the substrate portion 30, and an optical waveguide substrate 4 including an electrode-optical substrate 40, signal electrodes 431 and 432, and an optical waveguide 42 which are provided on the electro-optical substrate 40. Modulation signals are input from ends 31a and 32a on one side of the signal electrodes 31 and 32, the other end 31b of the signal electrode 31 is electrically connected to the signal electrode 431, the other end 32b of the signal electrode 32 is electrically connected to the signal electrode 432, an optical wave, which propagates through the optical waveguide 42, is modulated by the modulation signals which propagate through the signal electrodes 431 and 432, the ground electrode 33 is provided between the signal electrodes 31 and 32, and the relay substrate 3 includes a first adjacent portion 44 at which the signal electrodes 31 and 32 are adjacent to each other, and a through-hole 30g that is provided in the ground electrode 33 at the first adjacent portion 44.
Abstract translation: [解决方法]光调制器1包括：设置在基板部30上的基板部30，信号电极31,32以及接地电极33的中继基板3和具有电极的光波导基板4 - 光学基板40，信号电极431和432以及设置在电光基板40上的光波导42。调制信号从信号电极31,32的一侧的端部31a和32a输入，另一端 信号电极31的31b与信号电极431电连接，信号电极32的另一端32b与信号电极432电连接，通过光波导路42传播的光波被调制 通过信号电极431和432传播的信号，接地电极33设置在信号电极31和32之间，继电器基板3包括第一个广告 信号电极31和32彼此相邻的相邻部分44，以及设置在第一相邻部分44处的接地电极33中的通孔30g。
-
Patent Agency Ranking
16.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.
-
公开(公告)号：US10348007B2
公开(公告)日：2019-07-09
申请号：US15906511
申请日：2018-02-27
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Toshio Kataoka , Kei Katou
Abstract: There is provided an optical control element module including: an optical control element having an optical waveguide and a control electrode on a substrate and disposed in a housing; an electrical connection part which is electrically connected to the control electrode, extends along a direction intersecting a plane on which the control electrode of the substrate is disposed, and is disposed in the housing; and a wiring substrate which has an input signal line electrically connected to the electrical connection part, at least a part of which is disposed outside the housing, in which impedance of the electrical connection part is set to be smaller than impedance of the input signal line.
-
公开(公告)号：US10091881B1
公开(公告)日：2018-10-02
申请号：US15924378
申请日：2018-03-19
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Toshio Kataoka , Kei Katou
Abstract: An optical device includes a connection pad, which is connected to a conductor pattern on the circuit substrate, at one edge. The connection pad includes one ground pad, and two or more signal pads between which the ground pad is interposed from its both sides. The ground pad includes a concave portion including an opening at the edge. The circuit substrate is provided with a metal columnar member in the conductor pattern to which the ground pad is connected. The conductor pattern and the connection pad are fixed to each other with solder in a state in which the columnar member is fitted into the concave portion. Solder, which gradually rises from the ground pattern to a lateral surface of the columnar member, is formed between the columnar member and the ground pattern that is formed in the flexible printed circuit.
-
公开(公告)号：US10088734B2
公开(公告)日：2018-10-02
申请号：US15509692
申请日：2016-03-09
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Katsutoshi Kondou , Junichiro Ichikawa , Toshio Kataoka
Abstract: In a waveguide-type optical element, broaderband operation becomes possible. The waveguide-type optical element includes optical waveguides (110 and 112) formed on a substrate (100) having an electro-optic effect and a control electrode for controlling an optical wave that is transmitted through the optical waveguide, the control electrode comprises a central electrode (104) and ground electrodes (106 and 108), the central electrode being formed along the optical waveguide, and the ground electrodes being formed so as to put the central electrode therebetween in a surface direction of the substrate at a predetermined distance from the central electrode, and the central electrode or the ground electrodes have multiple pairs of facets, each comprising two facets facing each other, along a transmission direction of high-frequency signals that are transmitted through the central electrode and the ground electrodes.
-
公开(公告)号：US20170307911A1
公开(公告)日：2017-10-26
申请号：US15515831
申请日：2015-12-24
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Norikazu Miyazaki , Toshio Kataoka , Youichi Hosokawa , Kei Katou
CPC classification number: G02F1/03 , G02B26/02 , G02F1/0121 , G02F1/0126 , G02F1/025 , G02F1/035 , G02F1/3133 , G02F2203/21
Abstract: Provided is an optical modulator in which low-voltage drive and a stable modulation characteristic are secured over a wide bandwidth. An optical modulator includes: a substrate 10; an optical waveguide (not shown) formed in the substrate 10; a modulation electrode (a signal electrode 11 and a ground electrode 12) for modulating light waves propagating through the optical waveguide; and an external signal line (not shown, only a connection connector 4 is shown) which is provided outside the substrate and supplies a modulation signal to the modulation electrode, in which an impedance value of the modulation electrode in an active region S in which an electric field formed by the modulation electrode is applied to the optical waveguide is set to be lower than an impedance value of the external signal line, and an impedance adjustment part 21 having an impedance adjustment function with respect to mainly a modulation signal in a low-frequency area and configured of a lumped-constant circuit, and an impedance matching line L having an impedance adjustment function with respect to mainly a modulation signal in a high-frequency area are disposed between the external signal line and the active region of the modulation electrode.
-
-
-
-
-
-
-
-
-
Search Results
31
records
(took 0.018 seconds)
