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公开(公告)号：JP2010211241A
公开(公告)日：2010-09-24
申请号：JP2010146896
申请日：2010-06-28
Applicant: Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社
Inventor： YAMAMOTO FUTOSHI , OIKAWA SATORU , ICHIOKA MASAYUKI , FUJITA TAKAHISA , ICHIKAWA JUNICHIRO
IPC: G02F1/035
Abstract: PROBLEM TO BE SOLVED: To provide an optical modulator which includes a thin plate of ≤150 μm thickness and a reinforcing plate bonded to the rear surface of the thin plate, with the optical modulator having improved reliability, in terms of temperature drift and DC drift by effectively removing the influence due to the pyroelectric effect.
SOLUTION: The optical modulator includes the thin plate formed by a material having an electrooptical effect, and having a thickness of ≤150 μm; an optical waveguide formed on the thin plate; a modulating electrode for modulating light passing in the optical waveguide; and the reinforcing plate of which the thickness is thicker the thin plate. In the optical modulator, a pyroelectric effect reducing part which is formed by a material equivalent to a thin plate material, has substantially equal substrate thickness and is arranged so that the spontaneous polarization direction is opposite to that of the thin plate is formed between the thin plate and the reinforcing plate.
COPYRIGHT: (C)2010,JPO&INPITAbstract translation: 要解决的问题：提供一种光调制器，其包括厚度≤150μm的薄板和结合到薄板后表面的加强板，其中光调制器具有改善的可靠性，就温度漂移而言 并通过有效去除热电效应引起的影响，实现直流漂移。 解决方案：光调制器包括由具有电光效应的材料形成的厚度≤150μm的薄板; 形成在薄板上的光波导; 用于调制在所述光波导中通过的光的调制电极; 其厚度较薄的加强板。 在光调制器中，由与薄板材料相当的材料形成的热电效应降低部分具有基本上相同的基板厚度，并且被布置成使得自薄极化方向与薄板的自发极化方向相反， 板和加强板。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2008250080A
公开(公告)日：2008-10-16
申请号：JP2007092749
申请日：2007-03-30
Applicant: Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社
Inventor： OIKAWA SATORU , ICHIKAWA JUNICHIRO , KANEHARA YUUKI
IPC: G02F1/035
CPC classification number: G02F1/0356 , G02F1/2255 , G02F2202/20 , G02F2202/42
Abstract: PROBLEM TO BE SOLVED: To provide an optical control device capable of realizing speed matching between microwaves and light waves, and impedance matching of the microwaves, and moreover, is capable of reducing the drive voltage.
SOLUTION: In the optical control device having a thin plate having an electrooptical effect and 10 μm or smaller thickness, an optical waveguide formed on the thin plate and a control electrode for controlling the light passing through the optical waveguide, the control electrode comprises a first electrode and a second electrode disposed across the thin plate; the first electrode has a coplanar type electrode comprising at least a signal electrode and a ground electrode; and the second electrode has at least a ground electrode and is configured to apply an electric field to the optical waveguide in cooperation with the signal electrode of the first electrode. A low refractive index layer, having a width wider than the width of at least the signal electrode of the first electrode and provided over the entire length direction of at least the signal electrode, is formed at the lower part of the thin plate.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：提供能够实现微波和光波之间的速度匹配以及微波的阻抗匹配的光学控制装置，此外，能够降低驱动电压。 解决方案：在具有电光效应和10μm或更小厚度的薄板的光控制装置中，形成在薄板上的光波导和用于控制通过光波导的光的控制电极，控制电极 包括设置在所述薄板上的第一电极和第二电极; 所述第一电极具有至少包括信号电极和接地电极的共面型电极; 并且所述第二电极具有至少接地电极，并且被配置为与所述第一电极的信号电极协作地向所述光波导施加电场。 至少在信号电极的整个长度方向上具有比第一电极的信号电极的宽度宽的宽度的低折射率层形成在薄板的下部。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2007225672A
公开(公告)日：2007-09-06
申请号：JP2006043655
申请日：2006-02-21
Applicant: Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社
Inventor： ICHIOKA MASAYUKI , SAKUMA MITSURU , ICHIKAWA JUNICHIRO
IPC: G02F1/035
Abstract: PROBLEM TO BE SOLVED: To provide a light control element which has a configuration to simply guide a portion of, or all of, various light waves propagating inside the light control element to the outside of the substrate without lowering characteristics of the light control element. SOLUTION: In the light control element having: a substrate 1 with an electro-optic effect; an optical waveguide 2 formed on the substrate; a modulation electrode to control the light wave propagating through the optical waveguide; and a light receiving element to detect a portion of the light wave propagating through the optical waveguide, the light control element is characterized in that the substrate is a thin plate with 15 μm or less thickness, the substrate has a slope inclined toward a propagation direction of the light wave in the optical waveguide, a notch portion 10 laid across a portion of the optical waveguide is formed on the substrate, and a portion of the light wave propagating through the optical waveguide is emitted (14) from a substrate surface different from the substrate surface with the notch portion formed thereon to the outside of the substrate via the slope and is made incident on the light receiving element. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种光控制元件，其具有简单地将在光控制元件内传播的各种光波的一部分或全部引导到基板的外部而不降低光的特性的构造 控制元件。 光控制元件具有：具有电光效应的基板1; 形成在基板上的光波导2; 调制电极，用于控制通过光波导传播的光波; 以及光接收元件，用于检测通过光波导传播的光波的一部分，所述光控制元件的特征在于，所述基板是厚度为15μm以下的薄板，所述基板具有朝向传播方向倾斜的斜面 在光波导中的光波的一部分形成在基板上的横跨光波导的一部分的切口部分10，并且通过光波导传播的光波的一部分从不同于 具有通过斜面形成在其上的切口部分的基板表面到基板的外侧，并入射到光接收元件上。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2007094190A
公开(公告)日：2007-04-12
申请号：JP2005285559
申请日：2005-09-29
Applicant: Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社
Inventor： ICHIKAWA JUNICHIRO
CPC classification number: G02F1/3534 , G02F2202/02 , G02F2203/13 , H01S1/02 , H01S3/0078 , H01S3/06754 , H01S3/1608 , H01S3/30
Abstract: PROBLEM TO BE SOLVED: To provide a THz wave generating apparatus capable of efficiently generating several W class THz waves while suppressing the increase of manufacturing costs and an increase in the scale of the whole apparatus. SOLUTION: In the THz wave generating apparatus which makes a plurality of laser beams having different wavelengths incident on a THz wave generation element F to generate the THz waves from the THz wave generation element, it is characterized that at least one of the plurality of laser beams is converted into pulsed light by a pulse generator D, the pulsed light is amplified by an optical amplifier E and after that, made incident on the THz wave generation element F. Preferably, the plurality of laser beams having different wavelengths are generated by making single wavelength light from a single mode laser light source A on a multi-wavelength generator B and making light wave having a plurality of wavelengths generated from the multi-wavelength generator B on a wavelength selection means C. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种能够有效地产生多个W级THz波的太赫兹波发生装置，同时抑制制造成本的增加和整个装置的规模的增加。 解决方案：在太赫兹波发生装置中，其具有入射到太赫兹波发生元件F上的具有不同波长的多个激光束以产生来自太赫兹波发生元件的太赫兹波，其特征在于，至少一个 多个激光束被脉冲发生器D转换为脉冲光，脉冲光由光放大器E放大，然后入射到太赫兹波产生元件F.优选地，具有不同波长的多个激光束 通过在多波长发生器B上进行来自单模激光光源A的单波长光而在多波长发生器B上产生的多波长波长的光波在波长选择装置C上产生。 （C）2007，JPO＆INPIT
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公开(公告)号：JP2006243484A
公开(公告)日：2006-09-14
申请号：JP2005060603
申请日：2005-03-04
Applicant: Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社
Inventor： SUGANO SHINSUKE , SAKANE TOSHIO , ICHIKAWA JUNICHIRO
Abstract: PROBLEM TO BE SOLVED: To adjust a zero point of an optical waveguide element by a method excellent in long term stability without applying voltage and complicating the step. SOLUTION: When a light modulator 10 with a Mach-Zender type optical waveguide 12 is manufactured, in which a plurality of lights branched by a branching optical waveguide 12c on the substrate 11 are propagated through two or more separate optical waveguides 12a, 12b, respectively, and are thereafter multiplexed by a multiplexing optical waveguide 12d, the manufacturing method is characterized by performing a trimming step for removing a part of the separate optical waveguide 12a by irradiating the irradiation area 17a on the separate optical waveguide 12a with a laser beam. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：通过长期稳定性优异的方法调整光波导元件的零点，而不施加电压并使步骤复杂化。 解决方案：当制造具有Mach-Zender型光波导12的光调制器10，其中由基板11上的分支光波导12c分支的多个光通过两个或更多个分离的光波导12a传播时， 12b，然后由复用光波导12d复用，其制造方法的特征在于，通过用激光器照射分离的光波导12a上的照射区域17a来进行修整步骤，以去除一部分分离的光波导12a 光束。 版权所有（C）2006，JPO＆NCIPI
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Patent Agency Ranking
公开(公告)号：JP2005292287A
公开(公告)日：2005-10-20
申请号：JP2004104323
申请日：2004-03-31
Applicant: National Institute For Materials Science , Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社 , 独立行政法人物質・材料研究機構
Inventor： YAMAMOTO FUTOSHI , ICHIKAWA JUNICHIRO , KURIMURA SUNAO , KITAMURA KENJI
IPC: G02F1/37
Abstract: PROBLEM TO BE SOLVED: To provide a method of forming polarization inversion of finely and precisely forming a polarization inverted region in detail on a ferroelectric substrate, and the method for forming polarization inversion, capable of deterring a manufacturing stage from being complicated. SOLUTION: The method of forming polarization inversion of forming a recessed part 10 on the top or reverse surface of the ferroelectric substrate 1 and applying an electric field to the substrate to subject at least a portion of the substrate, in a region where the recessed part is formed to polarization inversion (11, 12) is characterized in that the the recessed part 10 is shaped gradually decreasing in width, inwardly in the substrate. Preferably, when the electric field is applied, the intensity of the electric field is increased, from a weak electric field including 0 electric field to an electric field having specified intensity. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种在铁电体基板上详细形成极化反转区域的极化反转的方法，以及能够抑制制造阶段复杂化的偏振反转方法。 解决方案：在强电介质基板1的顶表面或反面上形成凹部10的极化反转的方法，并在基板的至少一部分上施加电场，使基板的至少一部分在 凹陷部分形成为极化反转（11,12），其特征在于，凹陷部分10的形状在基底中向内逐渐减小。 优选地，当施加电场时，从包括0电场的弱电场到具有指定强度的电场，电场的强度增加。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2004318052A
公开(公告)日：2004-11-11
申请号：JP2003334793
申请日：2003-09-26
Applicant: Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社
Inventor： HASHIMOTO YOSHIHIRO , ICHIKAWA JUNICHIRO , HIKUMA KAORU , FUJITA TAKAHISA
CPC classification number: G02F1/0327 , G02F1/0123 , G02F1/035 , G02F1/225 , G02F2201/58
Abstract: PROBLEM TO BE SOLVED: To provide a method for bias control over an optical modulator and a device therefor that can properly correct DC biases of a plurality of optical modulation parts during normal operations of an optical modulator with simple structure even if the optical modulator has the plurality of optical modulation parts. SOLUTION: A bias controller B for optical modulator that controls DC biases of the plurality of optical modulation parts of the optical modulator 1 having the plurality of optical modulation parts has a DC bias applying means 3 of applying the DV biases to the plurality of optical modulation parts, a low-frequency signal superposing circuit 2 which superposes a low-frequency signal fB having a specified frequency on a modulation signal (b) applied to the plurality of optical modulation parts, an optical detecting means 9 of detecting variation in the light quantity of light waves passing through a multiplexing part, and a bias control means 4 of extracting light quantity variation corresponding to the low-frequency signal from the optical detecting means and controlling the DC bias applying means according to the extracted light quantity variation. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2004302191A
公开(公告)日：2004-10-28
申请号：JP2003095658
申请日：2003-03-31
Applicant: Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社
Inventor： ICHIKAWA JUNICHIRO , YAMAMOTO FUTOSHI , JINRIKI TAKASHI , HASHIMOTO YOSHIHIRO
CPC classification number: G02F1/035 , G02F1/225 , G02F2201/063 , G02F2203/21
Abstract: PROBLEM TO BE SOLVED: To suppress a DC drift phenomenon of a light control element having a ridge structure and to provide the light control element which has high driving stability even in a wide band. SOLUTION: The light control element which has a substrate with electrooptic effect, and an optical waveguide and an electrode for modulation formed on the substrate having a ridge structure is characterized in that a DC drift preventive layer is provided on the substrate surface where the optical waveguide is formed and an annealing process is carried out after ridge machining. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2001100163A
公开(公告)日：2001-04-13
申请号：JP27993399
申请日：1999-09-30
Applicant: SUMITOMO OSAKA CEMENT CO LTD
Inventor： ICHIKAWA JUNICHIRO , NOGUCHI TAKASHI , NAGATA HIROTOSHI , KUBODERA KENICHI
Abstract: PROBLEM TO BE SOLVED: To provide a new optical waveguide type element which permits ON/OFF control over an external signal at a high quenching ratio by compensating effective refractive index variation of a substrate and an optical waveguide due to defects and stress generated at the time of the production and a phase control method for the optical waveguide element. SOLUTION: This invented optical waveguide element 10 has a substrate 1 having electrooptic effect, a Mach-Zehnder type optical waveguide 2 for guiding a light wave, and a signal electrode 4 and ground electrodes 5-1 and 5-2 for controlling the light wave guided in the optical waveguide 2. At least part of 1st and 2nd branch optical waveguides 3-1 and 3-2 constituting the optical waveguide 2 on the substrate, a film body 6 of a material having a higher effective refractive index than the optical waveguide is formed to thickness less than a quarter as large as the wavelength of the light wave. Here, the film body 6 is formed by forming a specific thin film and then trimming the thin film so that phase control is placed in the best state.
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公开(公告)号：JPH11281803A
公开(公告)日：1999-10-15
申请号：JP7934598
申请日：1998-03-26
Applicant: Nec Corp , Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社 , 日本電気株式会社
Inventor： ICHIKAWA JUNICHIRO , HIKUMA KAORU , NAGATA HIROTOSHI , OGATA TAKAAKI , TANEDA YASUHISA
Abstract: PROBLEM TO BE SOLVED: To easily attenuate an abnormally high intensity light with precision without relying on wave length and polarized wave by arranging a liquid consisting of polar molecules between an optical output means and optical input means, making a light incident on the polar molecule liquid from the optical output means so as to scatter a part of it and receiving a part of the transmitted light by means of the optical input means.
SOLUTION: The light enters from the optical fiber core 2b of an optical fiber 2 at an optical output side and the light is made incident on the polar molecule liquid 1a from an optical output surface 2c. Then, in the polar molecules distributed in its optical path 1c, light intensity is attenuated, a refractive index is changed, a part of the incident light is scattered and adopted as a scatter light 1e and an optical intensity density is attenuated. The light transmitted through the liquid 1a along the optical path 1c is inputted to the optical fiber core 3b from the optical input surface 3c of the optical fiber 3 at an optical input side and inputted to desired optical parts or an element. The intensity of the inputted light onto the optical input surface 3c is lower than that of the light outputted form the optical output surface 2c.
COPYRIGHT: (C)1999,JPOAbstract translation: 要解决的问题：为了容易地通过在光输出装置和光输入装置之间布置由极性分子组成的液体，而不依赖于波长和极化波来精确地衰减异常高强度的光，使得入射到极性分子液体上的光 从光输出装置散射其一部分并通过光输入装置接收一部分透射光。 解决方案：光从光输出侧的光纤2的光纤芯2b入射，光从光输出面2c入射到极性分子液体1a上。 然后，在其光路1c分布的极性分子中，光强度衰减，折射率变化，一部分入射光被散射并作为散射光1e采用，光强度密度衰减。 沿着光路1c透射通过液体1a的光从光输入侧从光纤3的光输入表面3c输入到光纤芯3b，并输入到所需的光学部件或元件。 输入到光输入表面3c的光的强度低于从光输出表面2c输出的光的强度。
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