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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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公开(公告)号：US20150063810A1
公开(公告)日：2015-03-05
申请号：US14389426
申请日：2013-03-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuji Hayami , Toshio Kataoka
IPC: H04B10/61
CPC classification number: H04B10/6166 , H04B10/614 , H04J14/0221 , H04J14/06
Abstract: An object of the present invention is to provide an optical 90-degree hybrid circuit which is capable of easily adjusting the optical power ratio between signal and local oscillator and suppresses an optical system of an optical receiver becoming complex and optical receivers using the same. The optical 90-degree hybrid circuit for demodulating multilevel phase-modulated signals corresponding to individual polarized waves by multiplexing an optical wave having a predetermined plane of polarization contained in signal and local oscillator that has the same wavelength as the signal and has been adjusted to circularly-polarized signal, and polarization-splitting the multiplexed signal includes polarization splitting means (polarization splitting) for extracting an optical wave having a predetermined plane of polarization from the signal, a polarization conversion element for rotating a plane of polarization of the optical wave extracted from the polarization splitting means, and a polarizer that determines a plane of polarization of the signal before multiplexing the signal with the local oscillator, and the polarization splitting means, the polarization conversion element, and the polarizer adjust intensity of the optical signal (VOA function) in cooperation with each other.
Abstract translation: 本发明的目的是提供一种光学90度混合电路，其能够容易地调整信号和本地振荡器之间的光功率比，并抑制光接收机的光学系统变得复杂，并且使用该光学系统的光接收机。 光学90度混合电路，用于通过复用具有与信号相同波长的信号和本地振荡器中包含的预定偏振平面的光波来解调与各个极化波相对应的多电平相位调制信号，并将其调整为循环 并且偏振分离，复用信号包括用于从该信号中提取具有预定偏振平面的光波的偏振分离装置（偏振分离），用于旋转从...提取的光波偏振平面的偏振转换元件 所述偏振光分离装置和偏振器，其在将所述信号与所述本地振荡器复用之前确定所述信号的偏振面，并且所述偏振光分离装置，所述偏振光转换元件和所述偏振器调整所述光信号的强度（VOA功能） 相互配合。
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24.发明授权公开(公告)号：US12153295B2
公开(公告)日：2024-11-26
申请号：US17954304
申请日：2022-09-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Masayuki Motoya , Toshio Kataoka
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：US11493788B2
公开(公告)日：2022-11-08
申请号：US17170034
申请日：2021-02-08
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Takeshi Sakai , Toshio Kataoka
Abstract: An optical modulator includes a substrate on which an optical waveguide and a modulation electrode that modulates a light wave propagating through the optical waveguide are formed, and a case housing the substrate, the optical waveguide includes at least an optical branching part that branches one light wave into two light waves or an optical combining part that combines two light waves into one light wave, the modulation electrode has a signal electrode and a ground electrode, and a part of the signal electrode is disposed so as to cross the optical branching part or the optical combining part, and the optical modulator is provided with a suppressing unit that suppresses changes in an intensity ratio of the light waves branched at the optical branching part or an intensity ratio of the light waves combined at the optical combining part, by the signal electrode.
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Patent Agency Ranking
公开(公告)号：US10481464B2
公开(公告)日：2019-11-19
申请号：US15516028
申请日：2016-04-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Toshio Kataoka , Kei Kato
Abstract: The objective of the present invention is to provide an optical modulator adapted for use with various modulating units and various modulation regions, and with which variability in optical losses is limited as far as possible. An optical modulator in which an optical waveguide and a control electrode for controlling an optical wave propagating through the optical waveguide are provided in a substrate, characterized in that: the optical waveguide is provided with a first branching portion which causes one input light beam to branch into two light beams; each of a first and a second modulating portion connected to two branched waveguides which branch at the first branching portion is provided with a structure in which one or more Mach-Zehnder type optical waveguides are combined; the control electrode comprises signal electrodes which apply modulated signals to the first and second modulating portions; input portions of all the signal electrodes are disposed on either the left or the right of the substrate relative to the direction in which the optical wave propagates; and in relation to output portions of the signal electrodes, the output portions of the signal electrodes led out from each modulating portion are disposed on the side on which the first or second modulating portions are disposed, relative to the direction in which the optical wave propagates.
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公开(公告)号：US10401658B2
公开(公告)日：2019-09-03
申请号：US15504254
申请日：2015-08-31
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Toshio Kataoka , Kei Kato , Junichiro Ichikawa
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 an electrical signal along the flat surface; a second transmission line that is provided separately from the relay substrate, is electrically connected to the first transmission line, and transmits, to the first transmission line, the electrical signal that has been input from an outer side 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 the second transmission line.
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公开(公告)号：US10365506B2
公开(公告)日：2019-07-30
申请号：US15755735
申请日：2016-09-27
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Kei Katou , Toshio Kataoka , Junichiro Ichikawa
Abstract: Provided is an optical modulator in which a phenomenon of a resonance mode or the like is prevented from being generated in a recess portion of a housing that mounts a flexible printed circuit and of which broadband characteristics are improved.There is provided an optical modulator in which an optical modulation element is mounted inside a housing, in which at least a portion of an electric line is connected to an external circuit board 7 through a flexible printed circuit 6, and which is disposed on the external circuit board. A recess portion (area indicated with a dotted line D) that mounts the flexible printed circuit is formed on an outer bottom surface of the housing and at a part where the flexible printed circuit is connected, and means for preventing a resonance mode or the like (for example, a corrugated shape 21) is provided such that a resonance mode of a microwave and a millimeter wave or a parallel plate mode is prevented from being generated among a surface A of the recess portion facing the flexible printed circuit, an electric wiring part B provided on the flexible printed circuit overlapping the surface A when seen in a plan view, an electric wiring part C provided on the external circuit board overlapping the surface A when seen in a plan view.
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公开(公告)号：US10001602B2
公开(公告)日：2018-06-19
申请号：US15515895
申请日：2016-04-28
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Tokutaka Hara , Toshio Kataoka
CPC classification number: G02B6/2773 , G02B6/024 , G02B6/2706 , G02B6/2766 , G02B27/283
Abstract: Provided is a polarization-combining module in which it is possible to suppress deviation of an optical axis in a polarization-combining optical system and to perform efficient polarization combination with a less optical loss.A polarization-combining module includes: a PBS 4 which combines two linearly polarized lights input and emits the combined light; a λ/2 wavelength plate 3 which is provided on an optical path of at least one of the two linearly polarized lights which are input to the PBS 4, and provides polarization rotation by a predetermined angle to the linearly polarized light that passes therethrough; and a pedestal member 10 on which the λ/2 wavelength plate 3 and the PBS 4 are mounted, in which the pedestal member 10 has a protrusion part 12 which defines mounting positions of the λ/2 wavelength plate 3 and the PBS 4 so as to be separated from each other and be parallel to each other, and the λ/2 wavelength plate 3 and the PBS 4 are mounted on the pedestal member 10 with apart of each of the λ/2 wavelength plate 3 and the PBS 4 being brought into contact with the protrusion part 12.
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公开(公告)号：US20160054638A1
公开(公告)日：2016-02-25
申请号：US14780657
申请日：2014-02-25
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Norikazu Miyazaki , Toshio Kataoka , Youichi Hosokawa
IPC: G02F1/225
CPC classification number: G02F1/2255 , G02F1/0123 , G02F2001/212
Abstract: Provided is an optical waveguide element including a first interactive part, a first EO substrate line, a second interactive part, and a second EO substrate line. A relay substrate unit includes a first relay substrate line, a second relay substrate line, and a loss adjusting part. The loss adjusting part is provided to the relay substrate line in a combination in which an electrical loss is low so that an electrical loss in a combination of the first EO substrate line and the first relay substrate line, and an electrical loss in a combination of the second EO substrate line and the second relay substrate line become approximately the same as each other.
Abstract translation: 提供了一种包括第一交互部分，第一EO基底线，第二交互部分和第二EO基底线的光波导元件。 继电器基板单元包括第一继电器基板线，第二继电器基板线和损失调整部。 损耗调整部分以电损耗低的组合提供给继电器基板线，使得第一EO基板线和第一中继基板线的组合中的电损耗和组合的电损耗 第二EO基板线和第二继电器基板线彼此大致相同。
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