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1. 发明授权

US07985294B2 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：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。

2. 发明授权

US07925123B2 Optical control device 有权
标题翻译：光控装置
公开(公告)号：US07925123B2
公开(公告)日：2011-04-12
申请号：US12450369
申请日：2008-03-28
申请人： Satoshi Oikawa , Junichiro Ichikawa , Yuhki Kinpara
发明人： Satoshi Oikawa , Junichiro Ichikawa , Yuhki Kinpara
IPC分类号： G02F1/01 , G02F1/035 , G02F1/295 , G02B6/10
CPC分类号： G02F1/0356 , G02F1/2255 , G02F2202/20 , G02F2202/42
摘要： A light control element is provided with a thin board having electro-optical effects; an optical waveguide formed on the thin board; and a control electrode for controlling light that passes through the optical waveguide. The light control element performs speed matching between a microwave signal applied to the control electrode and the light, impedance matching of the microwaves, reduction of a driving voltage and high speed operation. In the control electrode of the light control element, a signal electrode and a grounding electrode are arranged on an upper side of the thin board, and on a lower side of the thin board, a second electrode including the grounding electrode is arranged, through a low refractive index layer entirely formed in the length direction of the signal electrode, with a width wider than that of the signal electrode.
摘要翻译：光控元件设置有具有电光效应的薄板; 形成在薄板上的光波导; 以及用于控制通过光波导的光的控制电极。光控制元件执行施加到控制电极的微波信号与光之间的速度匹配，微波的阻抗匹配，降低驱动电压和高速操作。在光控制元件的控制电极中，信号电极和接地电极设置在薄板的上侧，并且在薄板的下侧，包括接地电极的第二电极通过低折射率层完全形成在信号电极的长度方向上，宽度大于信号电极的宽度。

3. 发明授权

US07912326B2 Optical control device 有权
标题翻译：光控装置
公开(公告)号：US07912326B2
公开(公告)日：2011-03-22
申请号：US12450464
申请日：2008-03-28
申请人： Satoshi Oikawa , Junichiro Ichikawa , Yuhki Kinpara , Yuji Yamane
发明人： Satoshi Oikawa , Junichiro Ichikawa , Yuhki Kinpara , Yuji Yamane
IPC分类号： G02F1/035
CPC分类号： G02F1/0356 , G02F1/2255 , G02F2001/212 , G02F2201/12 , G02F2202/07 , G02F2202/20
摘要： A light control element is provided with a thin board having electro-optical effects; an optical waveguide formed on the thin board; and a control electrode for controlling light that passes through the optical waveguide. The light control element performs speed matching between a microwave signal applied to the control electrode and the light, impedance matching of the microwaves, reduction of a driving voltage and high speed operation. In the control electrode of the light control element, a signal electrode and a grounding electrode are arranged on an upper side of the thin board, and on a lower side of the thin board, a second electrode including the grounding electrode is arranged. The second electrode is arranged not to exist below the signal electrode, especially for achieving impedance matching.
摘要翻译：光控元件设置有具有电光效应的薄板; 形成在薄板上的光波导; 以及用于控制通过光波导的光的控制电极。光控制元件执行施加到控制电极的微波信号与光之间的速度匹配，微波的阻抗匹配，降低驱动电压和高速操作。在光控制元件的控制电极中，信号电极和接地电极布置在薄板的上侧，并且在薄板的下侧布置有包括接地电极的第二电极。第二电极布置成不存在于信号电极之下，特别是用于实现阻抗匹配。

4. 发明申请

US20090324156A1 Light control device 有权
标题翻译：灯光控制装置
公开(公告)号：US20090324156A1
公开(公告)日：2009-12-31
申请号：US12311442
申请日：2007-09-28
申请人： Yuhki Kinpara , Junichiro Ichikawa , Satoshi Oikawa
发明人： Yuhki Kinpara , Junichiro Ichikawa , Satoshi Oikawa
IPC分类号： G02F1/035
CPC分类号： G02F1/0356 , G02F1/0316 , G02F1/2255 , G02F2001/212 , G02F2201/127
摘要： To provide a light control device which is possible to realize a velocity matching between a microwave and an optical wave or an impedance matching of the microwaves even though a signal path having a high impedance of 70Ω or more, and is possible to reduce a driving voltage.The light control device having an electro-optical effect includes a thin plate 1 having a thickness of 10 μm or less, an optical waveguide 2 formed in the thin plate, and a controlling electrode for controlling light which passes through the optical waveguide, wherein the controlling electrode includes a first electrode and a second electrode which are disposed so as to interpose the thin plate, wherein the first electrode has a coplanar type electrode which includes at least a signal electrode 4 and a grounding electrode 5 (51), wherein the second electrode includes at least a grounding electrode 54 and is configured so as to apply an electric field to the optical waveguide in corporation with the signal electrode of the first electrode, and wherein the signal electrode of the first electrode includes a branched signal path in which at least one signal path is branched into two or more in the middle of the path.
摘要翻译：为了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的光控制装置，即使具有70多万或更高阻抗的信号路径，并且可以降低驱动电压。具有电光效应的光控制装置包括厚度为10um或更小的薄板1，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，其中，控制电极包括设置成插入薄板的第一电极和第二电极，其中第一电极具有至少包括信号电极4和接地电极5（51）的共面型电极，其中第二电极电极至少包括接地电极54，并且被配置为与第一电极的信号电极一起对光波导施加电场，并且其中第一电极的信号电极包括分支信号路径，其中在至少一条信号路径在路径的中间分支为两个或更多个。

5. 发明申请

US20090153948A1 THz Wave Generation Device 有权
标题翻译：太赫兹波发生装置
公开(公告)号：US20090153948A1
公开(公告)日：2009-06-18
申请号：US11992801
申请日：2006-09-27
申请人： Junichiro Ichikawa
发明人： Junichiro Ichikawa
IPC分类号： G02F1/355 , H01S3/11 , H01S3/16
CPC分类号： G02F1/3534 , G02F2202/02 , G02F2203/13 , H01S1/02 , H01S3/0078 , H01S3/06754 , H01S3/1608 , H01S3/30
摘要： [Task] To provide the THz wave generator restricting increase in manufacturing cost or large size of the entirety of the apparatus and generating efficiently the several-W THz wave.[Means for Resolution] In a THz wave generator for generating a THz wave from a THz wave generating element by inputting a plurality of laser beams having different wavelengths to the THz wave generating element, at least one laser beam among the plurality of laser beams is formed into a pulse beam by the pulse generator and the pulse beam is amplified by an optical amplifier E and then the pulse beam is inputted to the THz wave generating element F. Preferably, the plurality of laser beams having different wavelengths are generated by inputting single wavelength beam to a multi wavelength generator from single mode laser light source and by inputting light waves having a plurality of wavelengths generated from the multi wavelength generator to wavelength selecting means.
摘要翻译： [任务]提供太赫兹波发生器限制制造成本的增加或整个装置的大尺寸并且有效地产生几W的太赫兹波。 [分辨装置]在用于通过向THz波发生元件输入具有不同波长的多个激光束从太赫兹波发生元件产生太赫兹波的太赫兹波发生器中，多个激光束中的至少一个激光束是通过脉冲发生器形成脉冲光束，并且脉冲光束由光放大器E放大，然后将脉冲光束输入到太赫兹波发生元件F.优选地，具有不同波长的多个激光束通过输入单个从单模激光光源到多波长发生器的波长光束，并且通过将具有从多波长发生器产生的多个波长的光波输入波长选择装置。

6. 发明申请

US20090052013A1 THZ WAVE GENERATOR 有权
标题翻译： THZ波发电机
公开(公告)号：US20090052013A1
公开(公告)日：2009-02-26
申请号：US11547342
申请日：2005-03-24
申请人： Kaoru Higuma , Junichiro Ichikawa , Shingo Mori
发明人： Kaoru Higuma , Junichiro Ichikawa , Shingo Mori
IPC分类号： G02F1/39
CPC分类号： G02F1/3534 , G02F1/011 , G02F1/225 , G02F2203/13
摘要： The present invention purposes to provide a THz-wave generator capable of generating a THz-wave stably and efficiently, and particularly, to provide the THz-wave generator which is stable against a frequency shift of a laser source and which can easily vary the frequency of the THz-wave.A THz-wave generator, for inputting a laser beam from a light source unit A including a laser source to a THz-wave generating element D, and generating a THz-wave (fT) from the THz-wave generating element, wherein a light circulating unit including an SSB optical modulator, and wavelength selecting means C are disposed between the laser source A and the THz-wave generating element D, the laser beam is guided into the light circulating unit, a specific wavelength lightwave is selected out of lightwaves having a plurality of wavelengths generated in the light circulating unit by the wavelength selecting means, and the specific wavelength (f0, fn) lightwave is input to the THz-wave generating element.
摘要翻译：本发明的目的是提供一种能够稳定有效地产生太赫兹波的太赫兹波发生器，特别是为了提供对于激光源的频移稳定的THz波发生器，并且可以容易地改变频率的太赫兹波。一种太赫兹波发生器，用于将包括激光源的光源单元A的激光束输入到太赫兹波发生元件D，并从该THz波发生元件产生一个THz波（fT），其中一个光包括SSB光调制器的循环单元和波长选择装置C设置在激光源A和THz波发生元件D之间，激光束被引导到光循环单元中，从具有波长选择装置C的光波中选出特定波长的光波，通过波长选择装置在光循环单元中产生的多个波长和特定波长（f0，fn）光波被输入到THz波发生元件。

7. 发明申请

US20080212915A1 Nested modulator 有权
标题翻译：嵌套调制器
公开(公告)号：US20080212915A1
公开(公告)日：2008-09-04
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。

8. 发明申请

US20070053625A1 Optical modulator 有权
标题翻译：光调制器
公开(公告)号：US20070053625A1
公开(公告)日：2007-03-08
申请号：US11389726
申请日：2006-03-27
申请人： Masayuki Ichioka , Katsutoshi Kondou , Yasuhiro Ishikawa , Takashi Shinriki , Satoshi Oikawa , Junichiro Ichikawa
发明人： Masayuki Ichioka , Katsutoshi Kondou , Yasuhiro Ishikawa , Takashi Shinriki , Satoshi Oikawa , Junichiro Ichikawa
IPC分类号： G02F1/035
CPC分类号： G02F1/0311 , G02F1/035 , G02F1/225 , G02F2201/08
摘要： An optical modulator using a thin plate capable of improving an S/N ratio of an output light is provided. The optical modulator including a thin plate 1 having an electrooptic effect and having a thickness of 20 μm or less, an optical waveguide 4 formed on a top or bottom surface of the thin plate, and a modulation electrode formed on the top surface of the thin plate to modulate light passing through the optical waveguide, wherein a stray light removing member 10 is disposed within the thin plate or in a vicinity of the thin plate.
摘要翻译：提供一种使用能够提高输出光的S / N比的薄板的光调制器。光调制器包括具有电光效应并且厚度为20μm或更小的薄板1，形成在薄板的顶表面或底表面上的光波导4和形成在薄板的顶表面上的调制电极以调制通过光波导的光，其中杂散光去除构件10设置在薄板内或薄板附近。

9. 发明申请

US20070019968A1 Method and device for controlling bias of optical modulator 有权
标题翻译：用于控制光调制器偏置的方法和装置
公开(公告)号：US20070019968A1
公开(公告)日：2007-01-25
申请号：US10550770
申请日：2004-03-26
申请人： Yoshihiro Hashimoto , Junichiro Ichikawa , Kaoru Higuma , Takahisa Fujita
发明人： Yoshihiro Hashimoto , Junichiro Ichikawa , Kaoru Higuma , Takahisa Fujita
IPC分类号： H04B10/04
CPC分类号： G02F1/0327 , G02F1/0123 , G02F1/035 , G02F1/225 , G02F2201/58
摘要： A method and device for adequately controlling the DC bias of each of the optical modulating sections of an optical modulator even while the optical modulator is operating in normal mode and even with a simple structure. An optical modulator bias controller (B) for controlling the DC bias of each optical modulating section of an optical modulator (1) is characterized by comprising DC bias application means (3) for applying a DC bias to each of the optical modulating sections, a low-frequency signal superimposing circuit (2) for superimposing a low-frequency signal fB with a specific frequency on a modulating signal b applied to each optical modulating section, optical sensing means (9) for sensing a change of the intensity of the light wave passing through the combining section, and bias control means (4) for extracting the change of the intensity of light corresponding to the low-frequency signal from the optical sensing means and controlling the DC bias application means according to the extracted change of the intensity of light.
摘要翻译：即使在光调制器以正常模式操作并且甚至具有简单结构的情况下也可以充分地控制光调制器的每个光调制部分的DC偏置的方法和装置。用于控制光调制器（1）的每个光调制部分的DC偏压的光调制器偏置控制器（B）的特征在于包括用于向每个光调制部分施加DC偏压的DC偏压施加装置（3）用于将特定频率的低频信号f B B叠加到施加到每个光调制部分的调制信号b上的低频信号叠加电路（2），用于感测改变通过组合部分的光波的强度;以及偏压控制装置（4），用于从光学感测装置中提取与低频信号相对应的光强度的变化，并根据提取光强度的变化。

10. 发明授权

US06539153B2 Light limiter 失效
标题翻译：限光器
公开(公告)号：US06539153B2
公开(公告)日：2003-03-25
申请号：US09817824
申请日：2001-03-26
申请人： Yasuhisa Taneda , Takaaki Ogata , Hirotoshi Nagata , Junichiro Ichikawa , Kaoru Higuma
发明人： Yasuhisa Taneda , Takaaki Ogata , Hirotoshi Nagata , Junichiro Ichikawa , Kaoru Higuma
IPC分类号： G02B600
CPC分类号： G02F1/395
摘要： The object of the present invention is to provide a light limiter which can control the generation of an optical surge, comprises few components, and has high reliability; in order to achieve the object, the light limiter of the present invention comprise a parametric amplification element parametrically amplifying an input signal light, and a wavelength selection element removing a wavelength component, excepting a specified wavelength, from among the signal light output from said parametric amplification element.
摘要翻译：本发明的目的是提供一种可以控制光波浪的产生的光限制器，包括很少的部件，并且具有高的可靠性; 为了实现该目的，本发明的光限制器包括参数放大元件，其参数地放大输入信号光，以及波长选择元件，除去从所述参数的输出信号中除了特定波长之外的波长分量放大元件。

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