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公开(公告)号：US20160011377A1
公开(公告)日：2016-01-14
申请号：US14768888
申请日：2014-02-19
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Miki OKAMURA , Tokutaka HARA
CPC classification number: G02B6/327 , G02B6/122 , G02B6/30 , G02B6/4209 , G02B2006/12147 , G02F2001/212 , G02F2201/06 , G02F2202/20
Abstract: An optical device, comprising: a waveguide substrate in which two waveguides are formed along a waveguide plane, and a first emission light beam and a second emission light beam which are emitted from the two waveguides in parallel with each other; and a condensing member including a first condensing element which emits the first emission light beam after collimation, and a second condensing element which emits the second emission light beam after collimation, the first condensing element and the second condensing element being formed in an element installation surface with a constant interval, wherein when an angle made by an emission end surface of the waveguide substrate in the waveguide plane and a waveguide direction that is an extension direction of the waveguide is set as θ, a relationship of 0°
Abstract translation: 一种光学装置，包括：波导基板，其中沿着波导平面形成两个波导，以及从所述两个波导彼此平行地发射的第一发射光束和第二发射光束; 以及聚光构件，包括在准直之后发射第一发射光束的第一聚光元件和在准直之后发射第二发射光束的第二聚光元件，第一聚光元件和第二聚光元件形成在元件安装表面中 其中当波导衬底在波导平面中的发射端面和作为波导的延伸方向的波导方向的角度被设置为“θ”时，0°<| |θs的关系; | <90°。
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公开(公告)号：US20210026073A1
公开(公告)日：2021-01-28
申请号：US17041306
申请日：2019-03-07
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Makoto SHIMADA , Tokutaka HARA
Abstract: An optical modulation device includes: a substrate which extends in one direction; an optical waveguide provided on the substrate in a longitudinal direction of the substrate; a half-wave plate; and a combining element which faces an end portion of the substrate and combines two types of linearly polarized light, which have vibration planes orthogonal to each other, to generate composite light, in which the optical waveguide modulates the linearly polarized light which propagates through an inside of the optical waveguide to generate first polarized light and second polarized light, which are linearly polarized light, the half-wave plate is provided at a position to which the second polarized light enters, the combining element includes a transparent base body, a first optical film provided on a first surface of the transparent base body, and a second optical film provided on a second surface which faces the first surface of the transparent base body, the first optical film transmits one of the first polarized light and the second polarized light, which is emitted through the half-wave plate, and reflects the other light, the second optical film reflects the one light, and the composite light is reflected in a direction intersecting the longitudinal direction.
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公开(公告)号：US20180307116A1
公开(公告)日：2018-10-25
申请号：US15514505
申请日：2016-03-10
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Tokutaka HARA , Norikazu MIYAZAKI
CPC classification number: G02F1/225 , G02F1/0123 , G02F2001/212 , G02F2201/12 , G02F2202/20 , G02F2203/21
Abstract: Provided is an optical modulator in which degradation of an extinction ratio is suppressed and a temperature drift phenomenon is suppressed.An optical modulator includes: a substrate having an electro-optic effect; an optical waveguide formed on the substrate; and a control electrode for controlling light waves propagating through the optical waveguide, in which the optical waveguide has one or more Mach-Zehnder type optical waveguides (A1 to A3 and B1 to B3), the control electrode has DC electrodes (C1 to C4) which apply DC bias, a feeder electrode which feeds DC bias to the DC electrode crosses one of two branched waveguides of the Mach-Zehnder type optical waveguide, and a first dummy electrode (a dotted line E5 or E6) is provided at a specific position on the other one of the two branched waveguides, which is a specific position symmetrical in relation to a position at which the feeder electrode crosses the one of the two branched waveguides.
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公开(公告)号：US20170123287A1
公开(公告)日：2017-05-04
申请号：US15300426
申请日：2015-03-27
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Tokutaka HARA , Norikazu MIYAZAKI
IPC: G02F1/225
CPC classification number: G02F1/2255 , G02B6/29352 , G02B6/4215 , G02F2001/212 , G02F2201/58 , H01L31/0232
Abstract: An object is to provide an optical modulator in which a light receiving element is disposed on a substrate configuring the optical modulator and which is capable of suppressing a decrease in the frequency bandwidth of the light receiving element even in a case in which two radiated lights from a combining part in a Mach-Zehnder type optical waveguide are received and monitored at the same time. The optical modulator includes a substrate 1, an optical waveguide including a Mach-Zehnder type optical waveguide formed in the substrate, and a modulation electrode (not illustrated) for modulating light waves that propagate through the optical waveguide, alight receiving element 5 is disposed to bridge over an output waveguide 24 configuring the Mach-Zehnder type optical waveguide so as to receive two radiated lights being radiated from a combining part in the Mach-Zehnder type optical waveguide, and, in the light receiving element, two or more light receiving areas (51 and 52) are formed apart from each other on a substrate of light receiving element 55.
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公开(公告)号：US20190302471A1
公开(公告)日：2019-10-03
申请号：US16364457
申请日：2019-03-26
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Tokutaka HARA , Kei KATOU
Abstract: A positioning member for positioning optical components includes a laminated body in which a plurality of thin metal plates is laminated. In the positioning member for positioning the optical components by an upper surface of a first plate forming the laminated body and a side surface of a second plate disposed above the first plate, a portion where two non-parallel side surfaces of the second plate for positioning the optical components cross each other includes a cutout portion including a crossing portion of the side surfaces.
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Patent Agency Ranking
公开(公告)号：US20190302378A1
公开(公告)日：2019-10-03
申请号：US16364603
申请日：2019-03-26
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Tokutaka HARA , Kei KATOU
Abstract: An optical module in which an optical element is housed in a housing includes: an optical window member through which input light to the optical element or output light from the optical element passes and which hermetically seals inside of the housing; and a holding member that holds the optical window member. The optical window member is fixed to the housing by the holding member. A difference between linear expansion coefficients of the holding member and the optical window member is smaller than a difference between linear expansion coefficients of the housing and the optical window member. A position where the optical window member is attached on the holding member protrudes to an optical element side from a position where the holding member itself is fixed.
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公开(公告)号：US20170343837A1
公开(公告)日：2017-11-30
申请号：US15604951
申请日：2017-05-25
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Norikazu MIYAZAKI , Tokutaka HARA
CPC classification number: G02F1/035 , G02F1/225 , G02F2001/212 , G02F2201/58
Abstract: An optical modulator includes a substrate having an electro-optic effect, an optical waveguide formed on the substrate, a modulation part which modulates light waves propagating through the optical waveguide, and a light receiving element which detects the light waves propagating through the optical waveguide. As the modulation part, a first modulation part and a second modulation part, which respectively modulate light waves into which input light branches, are provided. As the light receiving element, a light receiving element for the first modulation part and a light receiving element for the second modulation part are provided. The light receiving elements are disposed such that their positions in a light propagation direction are shifted from each other by an amount corresponding to one light receiving element, or more.
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公开(公告)号：US20190004249A1
公开(公告)日：2019-01-03
申请号：US15555587
申请日：2016-09-16
Applicant: Sumitomo Osaka Cement Co., Ltd
Inventor： Tokutaka HARA , Ryo SHIMIZU
Abstract: To realize additional improvement and stabilization of optical characteristics, miniaturization, and low cost in an integration-type optical modulation device that includes a plurality of optical modulation elements, combines two modulated and linearly polarized light beams emitted from each of the modulation elements into one light beam. The optical modulation device includes two optical modulation elements (120a and 120b) each of which outputs two linearly polarized light beams; and four lenses (140a and the like) which respectively receive four linearly polarized light beams output from the two optical modulation elements. A distance between the two linearly polarized light beams which are output from one of the optical modulation elements and respectively pass through two of the lenses, and the two linearly polarized light beams which are output from the other optical modulation element and respectively pass through two of the lenses is set to gradually increase along a propagation direction.
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公开(公告)号：US20170299813A1
公开(公告)日：2017-10-19
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：US20150378237A1
公开(公告)日：2015-12-31
申请号：US14764678
申请日：2014-01-22
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Miki OKAMURA , Tokutaka HARA
CPC classification number: G02F1/225 , G02B6/126 , G02B2006/12164 , G02F1/035 , G02F1/2255 , G02F2001/212 , G02F2201/18 , H04B10/556 , H04J14/06
Abstract: An aspect of the present invention is an optical modulator, comprising a waveguide substrate and a multiplexing optical system. The waveguide substrate includes a first modulation portion, a second modulation, a first optical path and a second optical path. The multiplexing optical system includes a first surface and a second surface. First output light output from the first optical path and second output light output from the second optical path are input from the first surface and are output after there are combined at a combining point of the second surface. An optical path length between the first surface and the combining point in the first output light is larger than that of in the second output light. An optical path length between the first modulation portion and the first surface and an optical path length between the second modulation portion and the first surface are different.
Abstract translation: 本发明的一个方面是一种光调制器，包括一个波导基片和多路复用光学系统。 波导基板包括第一调制部分，第二调制部分，第一光路和第二光路。 复用光学系统包括第一表面和第二表面。 从第一光路输出的第一输出光和从第二光路输出的第二输出光从第一表面输入，并且在第二表面的组合点组合之后输出。 第一输出光中第一表面与合并点之间的光程长度大于第二输出光中的光路长度。 第一调制部和第一面之间的光路长度与第二调制部与第一面的光路长度不同。
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