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公开(公告)号：US07174059B2
公开(公告)日：2007-02-06
申请号：US11089895
申请日：2005-03-25
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。
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公开(公告)号：US20060079006A1
公开(公告)日：2006-04-13
申请号：US11083735
申请日：2005-03-18
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。
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公开(公告)号：US07985294B2
公开(公告)日：2011-07-26
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： C30B29/30
CPC分类号： G02B6/1342
摘要： An optical device and a method of manufacturing the optical device, with the method including the steps of forming a dopant layer on a stoichiometric lithium niobate single crystal substrate with Li to Nb mole composition ratio of 49.5% to 50.5%, and diffusing a dopant in the dopant layer into at least a portion of the stoichiometric lithium niobate single crystal substrate. The stoichiometric lithium niobate single crystal substrate includes 0.5 to 5 mol % of Mg. In the diffusing step, a heat treatment is performed at a diffusion temperature of 1000° C. to 1200° C. for a diffusion time of 3 hours to 24 hours in a dry atmosphere of at least one of O2, N2, Ar and He gas having a dew-point temperature of −35° C. or less.
摘要翻译： 一种光学器件和光学器件的制造方法，其特征在于包括以下步骤：在化学计量比的铌酸锂单晶衬底上形成掺杂剂层，其中Li与Nb的摩尔组成比为49.5％至50.5％，并将掺杂剂扩散到 该掺杂剂层至少部分化学计量的铌酸锂单晶衬底。 化学计量的铌酸锂单晶衬底包含0.5-5mol％的Mg。 在扩散步骤中，在O2，N2，Ar和He中的至少一种的干燥气氛中，在1000℃至1200℃的扩散温度下进行3小时至24小时的扩散时间的热处理 露点温度为-35℃以下的气体。
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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
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。
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公开(公告)号：US07260280B2
公开(公告)日：2007-08-21
申请号：US11500043
申请日：2006-08-07
IPC分类号： G02F1/295
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 has a substrate 1 formed of a material having an electrooptic effect, a plurality of optical waveguides formed on the substrate, and a modulating electrode for applying electric field into the optical waveguides, and is characterized in that the modulating electrode has at least two branching and confluence lines on the same line for applying the same modulating signal into different optical waveguides.
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。 光学元件具有由具有电光效应的材料形成的基板1，形成在基板上的多个光波导和用于向光波导施加电场的调制电极，其特征在于，所述调制电极至少具有 在同一条线上的两个分支和汇流线将相同的调制信号施加到不同的光波导中。
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公开(公告)号：US20060269184A1
公开(公告)日：2006-11-30
申请号：US11500043
申请日：2006-08-07
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 has a substrate 1 formed of a material having an electrooptic effect, a plurality of optical waveguides formed on the substrate, and a modulating electrode for applying electric field into the optical waveguides, and is characterized in that the modulating electrode has at least two branching and confluence lines on the same line for applying the same modulating signal into different optical waveguides.
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。 光学元件具有由具有电光效应的材料形成的基板1，形成在基板上的多个光波导和用于向光波导施加电场的调制电极，其特征在于，所述调制电极至少具有 在同一条线上的两个分支和汇流线将相同的调制信号施加到不同的光波导中。
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17.发明授权Method of inverting polarization by controlling defect density or degree of order of lattice points 有权通过控制缺陷密度或者点阵次序来反转极化的方法公开(公告)号：US07446930B2
公开(公告)日：2008-11-04
申请号：US10575271
申请日：2004-11-10
申请人： Kenji Kitamura , Sunao Kurimura , Masaru Nakamura , Shunji Takekawa , Kazuya Terabe , Shunichi Hishida , Tamaki Shimura
发明人： Kenji Kitamura , Sunao Kurimura , Masaru Nakamura , Shunji Takekawa , Kazuya Terabe , Shunichi Hishida , Tamaki Shimura
CPC分类号： G02F1/3558 , G02F2202/20
摘要： A problem to be solved is to provide a method of forming domain inverted regions of short period in a ferroelectric single crystal in a controllable time period of application of voltage and an optical wavelength conversion element using the same.A solving means of it solves the problem by forming (i) a control layer having a larger defect density Dcont1 than the defect density Dferro of a ferroelectric single crystal (Dferro
摘要翻译： 要解决的问题是提供一种在施加电压的可控时间内在铁电单晶中形成短周期的畴反转区域的方法和使用其的光波长转换元件。 其解决方法通过形成（i）具有比铁电单晶（D）的缺陷密度D 更大的缺陷密度D 的控制层来解决该问题 或者形成（ii）具有比铁电单晶的格点的次序小的点阵次数的控制层， 垂直于铁电单晶中的铁电单晶的偏振方向的面。
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18.发明申请Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element 失效具有多光栅的波长转换元件和使用所述元件的发光装置，以及具有圆柱形铁电单晶体的波长转换元件和使用所述元件的发光装置公开(公告)号：US20070127107A1
公开(公告)日：2007-06-07
申请号：US10575535
申请日：2004-11-19
CPC分类号： G02F1/37 , G02F2001/3507 , G02F2001/3548 , G02F2202/20
摘要： A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propagation, are provided. The wavelength conversion element is realized by comprising a holder and plural prismatic ferroelectric single crystals disposed in the holder, wherein plural prismatic ferroelectric single crystals have at least five planes; the aspect ratios of planes perpendicular to respective longitudinal directions of the plural prismatic ferroelectric single crystals are virtually unity; and each of the plural prismatic ferroelectric single crystals has a domain inversion structure with a predetermined period in the direction perpendicular to the polarization direction thereof, and is arranged in a way that said direction perpendicular to the polarization direction is the same as those of the other crystals. In addition, the element is realized by selecting ferroelectric material from a group comprising lithium niobate, lithium tantalate, impurity-doped lithium niobate, and impurity-doped lithium tantalate, each with virtually stoichiometric composition, and processing it into the cylindrical ferroelectric single crystal with a virtually completely round cross-section.
摘要翻译： 提供了具有不受损伤传播的多光栅的波长转换元件和使用它的发光装置，以及具有多光栅以实现热分布中心对称，并且没有损伤传播的波长转换元件。 波长转换元件通过包括保持器和设置在保持器中的多个棱柱铁电单晶实现，其中多个棱柱铁电单晶具有至少五个平面; 垂直于多个棱柱铁电单晶的纵向方向的平面的纵横比实际上是一致的; 并且多个棱柱铁电单晶中的每一个具有在垂直于其偏振方向的方向上具有预定周期的畴反转结构，并且以与偏振方向垂直的方向与其他方向相同的方式 晶体。 此外，该元件通过从包含铌酸锂，钽酸锂，杂质掺杂的铌酸锂和杂质掺杂的钽酸锂的组中选择铁电材料来实现，每个具有实质上的化学计量组成，并且将其加工成圆柱形铁电单晶， 一个几乎完全圆形的横截面。
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19.发明申请公开(公告)号：US20070053054A1
公开(公告)日：2007-03-08
申请号：US10575271
申请日：2004-11-10
申请人： Kenji Kitamura , Sunao Kurimura , Masaru Nakamura , Shunji Takekawa , Kazuya Terabe , Shunichi Hishida , Tamaki Shimura
发明人： Kenji Kitamura , Sunao Kurimura , Masaru Nakamura , Shunji Takekawa , Kazuya Terabe , Shunichi Hishida , Tamaki Shimura
IPC分类号： G02F1/35
CPC分类号： G02F1/3558 , G02F2202/20
摘要： A problem to be solved is to provide a method of forming domain inverted regions of short period in a ferroelectric single crystal in a controllable time period of application of voltage and an optical wavelength conversion element using the same. A solving means of it solves the problem by forming (i) a control layer having a larger defect density Dcont1 than the defect density Dferro of a ferroelectric single crystal (Dferro
摘要翻译： 要解决的问题是提供一种在施加电压的可控时间内在铁电单晶中形成短周期的畴反转区域的方法和使用其的光波长转换元件。 其解决方法通过形成（i）具有比铁电单晶（D）的缺陷密度D 更大的缺陷密度D 的控制层来解决该问题 或者形成（ii）具有比铁电单晶的格点的次序小的点阵次数的控制层， 垂直于铁电单晶中的铁电单晶的偏振方向的面。
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20.发明授权Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element 失效具有多光栅的波长转换元件和使用所述元件的发光装置，以及具有圆柱形铁电单晶体的波长转换元件和使用所述元件的发光装置公开(公告)号：US07403327B2
公开(公告)日：2008-07-22
申请号：US10575535
申请日：2004-11-19
IPC分类号： G02F1/35
CPC分类号： G02F1/37 , G02F2001/3507 , G02F2001/3548 , G02F2202/20
摘要： A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propagation, are provided. The wavelength conversion element is realized by comprising a holder and plural prismatic ferroelectric single crystals disposed in the holder, wherein plural prismatic ferroelectric single crystals have at least five planes; the aspect ratios of planes perpendicular to respective longitudinal directions of the plural prismatic ferroelectric single crystals are virtually unity; and each of the plural prismatic ferroelectric single crystals has a domain inversion structure with a predetermined period in the direction perpendicular to the polarization direction thereof, and is arranged in a way that said direction perpendicular to the polarization direction is the same as those of the other crystals.
摘要翻译： 提供了具有不受损伤传播的多光栅的波长转换元件和使用它的发光装置，以及具有多光栅以实现热分布中心对称，并且没有损伤传播的波长转换元件。 波长转换元件通过包括保持器和设置在保持器中的多个棱柱铁电单晶实现，其中多个棱柱铁电单晶具有至少五个平面; 垂直于多个棱柱铁电单晶的纵向方向的平面的纵横比实际上是一致的; 并且多个棱柱铁电单晶中的每一个具有在垂直于其偏振方向的方向上具有预定周期的畴反转结构，并且以与偏振方向垂直的方向与其他方向相同的方式 晶体。
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