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1. 发明授权

US08293543B2 Method for forming polarization reversal 有权
标题翻译：形成极化反转的方法
公开(公告)号：US08293543B2
公开(公告)日：2012-10-23
申请号：US13066744
申请日：2011-04-22
申请人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
发明人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
IPC分类号： H01L21/00
CPC分类号： G02F1/3558 , Y10T29/4902
摘要： A method for forming a ferroelectric spontaneous polarization reversal includes the steps of forming a convexo-concave structure on a top face of a ferroelectric substrate firstly, and then forming a ferroelectric spontaneous polarization region on the substrate including one portion of a convex portion, with a concave portion being formed on the bottom face of the substrate within a region where a ferroelectric spontaneous polarization reversal is to be formed and the convex portion is formed, and then applying an electric field into the substrate. The depth of the concave portion on the bottom face of the substrate may be greater than the height of the convex portion on the top face of the substrate. The width of the concave portion on the bottom face of the substrate may be wider than width of said convex portion on the top face of the substrate.
摘要翻译：形成铁电自发极化反转的方法包括以下步骤：首先在铁电体的顶面上形成凸凹结构，然后在包括凸部的一部分的基板上形成铁电自发极化区域，在要形成铁电自发极化反转的区域和形成凸部的区域中，在基板的底面上形成凹部，然后向基板施加电场。基板的底面上的凹部的深度可以大于基板的顶面上的凸部的高度。基板的底面上的凹部的宽度可以比基板的顶面上的凸部的宽度宽。

2. 发明申请

US20110201133A1 Method for forming polarization reversal 有权
标题翻译：形成极化反转的方法
公开(公告)号：US20110201133A1
公开(公告)日：2011-08-18
申请号：US13066730
申请日：2011-04-22
申请人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
发明人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
IPC分类号： H01L21/02
CPC分类号： G02F1/3558 , Y10T29/4902
摘要： A method for forming a ferroelectric spontaneous polarization reversal, including the steps of forming a concave portion on a top face of a ferroelectric substrate or a bottom face of a ferroelectric substrate, and applying an electric field into the substrate, wherein a ferroelectric spontaneous polarization reversal is formed at least in one portion of a region of the substrate with the concave portion, and wherein the shape of the concave portion is configured such that the width of the concave portion gets narrower gradually toward the inside of the substrate. The method may further include the steps of, after the reversal, making into almost a flat-plane the top or bottom face having the concave portion, and then, forming a new concave portion in another region and applying an electric field to form another reversal in one portion of the region of the substrate having the new concave portion.
摘要翻译：一种形成铁电自发极化反转的方法，包括以下步骤：在强电介质基板的顶面或铁电基板的底面上形成凹部，并向基板施加电场，其中，铁电自发极化反转至少在具有凹部的基板的区域的一部分中形成，并且其中凹部的形状被构造成使得凹部的宽度朝向基板的内部逐渐变窄。该方法还可以包括以下步骤：在反转之后，使具有凹部的顶面或底面几乎成为平面，然后在另一区域形成新的凹部，并施加电场以形成另一反转在具有新的凹部的基板的区域的一部分中。

3. 发明授权

US07689067B2 Nested modulator 有权
标题翻译：嵌套调制器
公开(公告)号：US07689067B2
公开(公告)日：2010-03-30
申请号：US11983071
申请日：2007-11-07
申请人： Junichiro Ichikawa , Kaoru Higuma , Futoshi Yamamoto , Satoshi Oikawa , Shingo Mori , Sunao Kurimura , Kenji Kitamura , Tetsuya Kawanishi , Masahiro Tsuchiya , Masayuki Izutsu
发明人： Junichiro Ichikawa , Kaoru Higuma , Futoshi Yamamoto , Satoshi Oikawa , Shingo Mori , Sunao Kurimura , Kenji Kitamura , Tetsuya Kawanishi , Masahiro Tsuchiya , Masayuki Izutsu
IPC分类号： G02F1/035
CPC分类号： G02F1/035 , G02F2001/212 , G02F2201/18 , G02F2202/20
摘要： A nested modulator is provided where the circuit arrangement of modifying electrodes including signal electrodes is simplified, and at the same time, the drive voltage can be lowered.A nested modulator, including: a substrate 20 made of a material having electro-optic effects; an optical waveguide formed on the substrate; and a modulating electrode for modulating light waves which are guided through the optical waveguide, wherein the optical waveguide has a main Mach-Zehnder waveguide 1 and sub-Mach-Zehnder waveguides 2 and 3 provided on two branching waveguides of the main Mach-Zehnder waveguide, and the modulating electrode is provided in a sub-branching waveguide of the sub-Mach-Zehnder waveguides, is characterized in that a polarization reversal region 46 or 47 is formed in a portion of a sub-branching waveguide of each of the sub-Mach-Zehnder waveguides, the modulating electrode is formed of signal electrodes including introduced signal electrodes 40 or 43, branching single electrodes 41 or 44 and lead signal electrodes 42 or 45 as well as ground electrodes for each of sub-Mach-Zehnder waveguides, and the branching signal electrodes which branch from the introduced signal electrode are placed so as to work on two sub-branching waveguides for each of the sub-Mach-Zehnder waveguides.
摘要翻译：提供了一种嵌入式调制器，其中包括信号电极的修改电极的电路布置被简化，并且同时可以降低驱动电压。嵌套调制器，包括：由具有电光效应的材料制成的衬底20; 形成在基板上的光波导; 以及用于调制通过光波导引导的光波的调制电极，其中光波导具有设置在主马赫 - 曾德尔波导的两个分支波导上的主马赫 - 曾德尔波导1和副马赫 - 曾德尔波导2 并且所述调制电极设置在所述子马赫 - 曾德尔波导的子分支波导中，其特征在于，在每个所述子马赫 - 曾德尔波导的子分支波导的一部分中形成偏振反转区域46或47，马赫曾德尔波导，调制电极由包括引入信号电极40或43，分支单电极41或44和引导信号电极42或45以及每个子马赫 - 曾德尔波导的接地电极的信号电极形成，以及从引入的信号电极分支的分支信号电极被放置成对每个子马赫 - 曾德尔波导的两个子分支波导进行工作。

4. 发明授权

US07174059B2 Optical device 有权
标题翻译：光学装置
公开(公告)号：US07174059B2
公开(公告)日：2007-02-06
申请号：US11089895
申请日：2005-03-25
申请人： Satoshi Oikawa , Junichiro Ichikawa , Futoshi Yamamoto , Sunao Kurimura , Kenji Kitamura
发明人： Satoshi Oikawa , Junichiro Ichikawa , Futoshi Yamamoto , Sunao Kurimura , Kenji Kitamura
IPC分类号： G02F1/035
CPC分类号： G02F1/035 , G02F1/0356 , G02F1/055 , G02F1/21 , G02F1/225 , G02F2201/34
摘要： The present invention provides a highly-integrated and compact optical element and further provides an optical element having various functions such as lower driving voltage, chirping suppression and polarization-independency.The optical element comprising a substrate 1 consisting of a material having an electrooptic effect, top optical waveguides 2-1 an 2-2 formed on the top face of said substrate, bottom optical waveguides formed on the bottom face of said substrate, a top modulating electrode for controlling the phase of a light wave being propagated through said top optical waveguide, and a bottom modulating electrode for controlling the phase of a light wave being propagated through said bottom optical waveguide, is characterized in that at least one side edge of said substrate comprises output and input of said optical waveguides formed on said top and bottom faces, and a turnback element is located adjacent to said one side edge to guide the light wave from said output to said input.
摘要翻译：本发明提供高度集成且紧凑的光学元件，并且还提供具有各种功能的光学元件，例如较低的驱动电压，啁啾抑制和极化独立性。该光学元件包括由具有电光效应的材料构成的衬底1，形成在所述衬底的顶面上的顶部光波导2-1和2 - 2，形成在所述衬底的底面上的底部光波导，顶部调制用于控制通过所述顶部光波导传播的光波的相位的电极和用于控制通过所述底部光波导传播的光波的相位的底部调制电极，其特征在于，所述基板的至少一个侧边缘包括形成在所述顶面和底面上的所述光波导的输出和输入，并且转向元件位于所述一个侧边缘附近，以将光波从所述输出引导到所述输入。

5. 发明申请

US20070014014A1 Optical device and method of manufacturing the same 有权
标题翻译：光学装置及其制造方法
公开(公告)号：US20070014014A1
公开(公告)日：2007-01-18
申请号：US11367261
申请日：2006-03-03
申请人： Futoshi Yamamoto , Katsutoshi Kondou , Junichiro Ichikawa , Masaru Nakamura , Sunao Kurimura , Shunji Takekawa , Kenji Kitamura
发明人： Futoshi Yamamoto , Katsutoshi Kondou , Junichiro Ichikawa , Masaru Nakamura , Sunao Kurimura , Shunji Takekawa , Kenji Kitamura
IPC分类号： G02B5/18 , G02B27/44
CPC分类号： G02B6/1342
摘要： An object of the present invention is to provide an optical device having high quality, excellent productivity and optical characteristics, and capable of suppressing a refractive index of a substrate surface from increasing when a dopant is thermally diffused into, or a heat treatment is performed in order to compensate of process distortion in stoichiometric lithium niobate crystal or a crystal substrate in which Mg is doped into the crystal, and a method of manufacturing the same. According to the present invention, there is provided a method of manufacturing an optical device including the steps of: forming a dopant layer on a substantial stoichiometric lithium niobate single crystal substrate; and diffusing a dopant in the dopant layer into at least a portion of the substantial stoichiometric lithium niobate single crystal substrate, wherein, in the diffusing step, a heat treatment is performed at a diffusion temperature of 1000° C. to 1200° C. in an atmosphere in which a gas having a dew-point temperature of 0° C. or less is introduced, preferably for a diffusion time of 3 hours or more, and more preferably 3 hours to 24 hours.
摘要翻译：本发明的目的是提供一种具有高质量，优异的生产率和光学特性的光学器件，并且能够抑制当掺杂剂热扩散时衬底表面的折射率增加，或者在为了补偿化学计量比的铌酸锂晶体或其中Mg掺杂到晶体中的晶体衬底的工艺失真及其制造方法。根据本发明，提供了一种制造光学器件的方法，包括以下步骤：在基本上化学计量的铌酸锂单晶衬底上形成掺杂剂层; 并且将掺杂剂层中的掺杂剂扩散到至少一部分实质上的化学计量的铌酸锂单晶衬底中，其中在扩散步骤中，在1000℃至1200℃的扩散温度下进行热处理引入露点温度为0℃以下的气体的气氛，优选扩散时间为3小时以上，更优选为3小时〜24小时。

6. 发明申请

US20060079006A1 Method for forming polarization reversal 有权
标题翻译：形成极化反转的方法
公开(公告)号：US20060079006A1
公开(公告)日：2006-04-13
申请号：US11083735
申请日：2005-03-18
申请人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
发明人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
IPC分类号： H01L21/00
CPC分类号： G02F1/3558 , Y10T29/4902
摘要： The present invention provides a method for forming a ferroelectric spontaneous polarization reversal capable of forming a ferroelectric spontaneous polarization reversal condition homogeneously within the ferroelectric spontaneous polarization reversal region even across a large region of 50 μm and over in width of a ferroelectric spontaneous polarization reversal. Also, it provides a method for forming a ferroelectric spontaneous polarization reversal where a ferroelectric substrate has convexo-concave structure, such as ridge structure and the like, on its surface and the polarity of the region including one portion of said convex part is reversed with accuracy. A method for forming a ferroelectric spontaneous polarization reversal in a desired region of a ferroelectric substrate 1 has a feature that said desired region 20 of a surface of said ferroelectric substrate is sprayed with micro-hard materials, made an impact by using a striking member that has micro tip diameter, or rubbed with micro-hard materials that are dispersively located on the surface of the substrate to thereby generate nucleuses, and subsequently, a given voltage is applied into said desired region to thereby form a ferroelectric spontaneous polarization reversal in said desired region of said ferroelectric substrate. Also, a method for forming a ferroelectric spontaneous polarization reversal where a convexo-concave structure is formed on a top face of a ferroelectric substrate firstly, and then, a ferroelectric spontaneous polarization region is formed on the substrate including one portion of said convex part, has a feature that a concave portion is formed on a bottom face of the substrate within the region where a ferroelectric spontaneous polarization reversal is to be formed and at least said convex portion is formed, and then, an electric field is applied into said substrate.
摘要翻译：本发明提供一种形成铁电自发极化反转的方法，其能够在强电介质自发极化反转区域内均匀地形成强电介质自发极化反转区域，即使在铁电自发极化反转的宽度为50μm的大区域之上。此外，它提供了形成铁电自发极化反转的方法，其中铁电衬底在其表面上具有凸凹结构，例如脊结构等，并且包括所述凸部的一部分的区域的极性与准确性。在铁电基板1的所需区域中形成铁电自发极化反转的方法具有以下特征：所述强电介质基板的表面的所述期望区域20被微硬材料喷射，通过使用冲击构件具有微尖端直径，或用分散地位于衬底表面上的微硬质材料摩擦，从而产生核，随后将给定电压施加到所述期望区域中，从而在所述期望区域内形成铁电自发极化反转所述铁电衬底的区域。此外，首先在铁电体的顶面上形成凸凹结构的铁电自发极化反转的形成方法，然后在包括所述凸部的一部分的基板上形成铁电自发极化区域，具有在要形成铁电自发极化反转的区域内在基板的底面上形成凹部并且至少形成所述凸部的特征，然后将电场施加到所述基板中。

7. 发明授权

US07009758B2 Light control element 有权
标题翻译：灯光控制元件
公开(公告)号：US07009758B2
公开(公告)日：2006-03-07
申请号：US10809053
申请日：2004-03-25
申请人： Junichiro Ichikawa , Futoshi Yamamoto , Takashi Shinriki , Yoshihiro Hashimoto
发明人： Junichiro Ichikawa , Futoshi Yamamoto , Takashi Shinriki , Yoshihiro Hashimoto
IPC分类号： G02F1/00
CPC分类号： G02F1/035 , G02F1/225 , G02F2201/063 , G02F2203/21
摘要： The present invention intends to control DC drift phenomenon in a light control element having ridge structure, and to provide a light control element with high drive stability in a large area. The present invention has character that, in a light control element being equipped with a base plate that has an electrooptic effect, an optical guide and an electrode for modulation that are formed on said base plate, which has ridge structure, an anti-DC drift layer is installed on the surface of the above mentioned base plate where the optical guide is formed, and annealing treatment is performed after ridge processing.
摘要翻译：本发明旨在控制具有脊结构的光控制元件中的DC漂移现象，并且在大面积上提供具有高驱动稳定性的光控制元件。本发明的特征在于，在具有电光效应的基板的光控制元件中，形成有具有脊结构的所述基板上的光导和调制用电极，具有防直流漂移在形成光导的上述基板的表面上安装层，并且在脊加工之后进行退火处理。

8. 发明授权

US06910409B2 Oscillating actuator 失效
标题翻译：振荡执行器
公开(公告)号：US06910409B2
公开(公告)日：2005-06-28
申请号：US10330142
申请日：2002-12-30
申请人： Futoshi Yamamoto
发明人： Futoshi Yamamoto
IPC分类号： F01B9/04 , F16H19/04 , F01B9/00
CPC分类号： F01B9/047 , F16H19/043
摘要： A rack and pinion type oscillating actuator includes a pair of parallel sliding holes formed in a body, rack members having racks slidably fitted in the pair of sliding holes, respectively, an output shaft having a pinion engaged with the racks is rotatably supported by bearings arranged in the body, and an output shaft is rotated by reciprocating of the rack members on the basis of supplying and discharging of compressed air. An end member closing one opening in the sliding hole is arranged in the body, a piston extending in an axial direction from the end member within the sliding hole is inserted in a closed-end cylindrical hole provided in the rack member so as to be relatively displaced in an axial direction, and a fluid passage, in which one end portion communicating with a pipe port provided in the end member and another end communicating with the closed-end cylindrical hole is provided in the piston.
摘要翻译：齿条小齿轮摆动致动器包括形成在主体中的一对平行的滑动孔，齿条构件分别具有可滑动地装配在一对滑动孔中的齿条，具有与齿条啮合的小齿轮的输出轴由布置的轴承可旋转地支撑并且输出轴基于压缩空气的供给和排出而通过齿条构件的往复运动而旋转。关闭滑动孔中的一个开口的端部构件被布置在主体中，从滑动孔内的端部构件在轴向方向上延伸的活塞插入设置在齿条构件中的闭合端圆柱形孔中，以相对于以及流体通道，其中与设置在端部构件中的管口连通的一个端部和与封闭端圆柱形孔连通的另一端设置在活塞中。

9. 发明授权

US08669121B2 Method for forming polarization reversal 有权
标题翻译：形成极化反转的方法
公开(公告)号：US08669121B2
公开(公告)日：2014-03-11
申请号：US13066737
申请日：2011-04-22
申请人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
发明人： Futoshi Yamamoto , Junichiro Ichikawa , Satoshi Oikawa , Sunao Kurimura , Kenji Kitamura
IPC分类号： H01L21/00
CPC分类号： G02F1/3558 , Y10T29/4902
摘要： A method for forming a ferroelectric spontaneous polarization reversal in a desired region of a ferroelectric substrate includes the steps of forming, for the desired region of the surface of the ferroelectric substrate, an electrode pattern or a mask pattern composed of aggregates of micropatterns, and then applying a given voltage into the desired region. The configuration of the micropatterns can be a stripe-shaped pattern, an ellipse-shaped pattern, a hexagon-shaped pattern, a network pattern, or a double cross shaped pattern. The method can further include the steps of generating many nucleuses by using the electrode pattern or the mask pattern composed of the aggregates of micropatterns, forming another electrode pattern or another mask pattern corresponding to the desired region, and then applying a given voltage into the desired region to generate a ferroelectric spontaneous polarization reversal around the nucleuses.
摘要翻译：在铁电基板的所需区域中形成铁电自发极化反转的方法包括以下步骤：对于铁电体基板的表面的期望区域，形成由微图案的聚集体构成的电极图案或掩模图案，然后将给定电压施加到所需区域。微图案的构造可以是条形图案，椭圆形图案，六边形图案，网状图案或双十字形图案。该方法还可以包括通过使用由微图案的聚集体形成的电极图案或掩模图案，形成另一电极图案或对应于期望区域的另一掩模图案，然后将给定电压施加到期望的区域以产生围绕核的铁电自发极化反转。

10. 发明授权

US08644647B2 Optical control device 有权
标题翻译：光控装置
公开(公告)号：US08644647B2
公开(公告)日：2014-02-04
申请号：US12225787
申请日：2007-03-30
申请人： Junichiro Ichikawa , Futoshi Yamamoto , Yuhki Kinpara , Katsutoshi Kondou , Satoshi Oikawa
发明人： Junichiro Ichikawa , Futoshi Yamamoto , Yuhki Kinpara , Katsutoshi Kondou , Satoshi Oikawa
IPC分类号： G02F1/035
CPC分类号： G02F1/0356 , G02F1/2255 , G02F2201/063 , G02F2201/066 , G02F2201/121
摘要： It is an object to provide an optical control device capable of realizing speed matching between a microwave and a light wave or impedance matching of microwaves and of reducing a driving voltage. An optical control device including a thin plate 1 (11) which has an electro-optical effect and has a thickness of 10 μm or less, an optical waveguide 2 formed in the thin plate, and control electrodes for controlling light passing through the optical waveguide is characterized in that the control electrodes are configured to include a first electrode and a second electrode disposed to interpose the thin plate therebetween, the first electrode has a coplanar type electrode including at least a signal electrode 4 and a ground electrode 5, and the second electrode has at least a ground electrode 54 (55, 56) and is configured to apply an electric field to the optical waveguide in cooperation with the signal electrode of the first electrode.
摘要翻译：本发明的目的是提供一种能够实现微波和光波之间的速度匹配或微波的阻抗匹配以及降低驱动电压的光学控制装置。一种光学控制装置，包括具有电光效应并且具有10μm或更小的厚度的薄板1（11），形成在薄板中的光波导2和用于控制通过光波导的光的控制电极其特征在于，控制电极被配置为包括第一电极和设置成将薄板夹在其间的第二电极，第一电极具有至少包括信号电极4和接地电极5的共面型电极，第二电极电极至少具有接地电极54（55,56），并且被配置为与第一电极的信号电极协作地向光波导施加电场。

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