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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。
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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。
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公开(公告)号：US07768696B2
公开(公告)日：2010-08-03
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
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，并从所述THz波发生元件产生THz波（fT），其中，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。
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公开(公告)号：US20070292142A1
公开(公告)日：2007-12-20
申请号：US10593661
申请日：2004-03-22
申请人： Yoshihiro Hashimoto , Kaoru Higuma , Junichiro Ichikawa , Shingo Mori , Yozo Shoji , Hiroyo Ogawa
发明人： Yoshihiro Hashimoto , Kaoru Higuma , Junichiro Ichikawa , Shingo Mori , Yozo Shoji , Hiroyo Ogawa
CPC分类号： H04B10/50575 , H04B10/25758 , H04B10/505 , H04B10/5053 , H04B10/50572 , H04B10/50577 , H04B10/5165
摘要： A method for generating a carrier residual signal and its device, in which a heterodyne optical signal used in a photometric field or an optical fiber radio communication field can be stably generated with a simplified structure. The device includes an optical modulating unit that includes a light source generating a light wave having a specific wavelength, and an SSB optical modulator. A light wave emitted from the light source enters into the optical modulating unit. A light wave emitted from the optical modulating unit includes a carrier component related to a zero-order Bessel function and a specific signal component related to a specific high-order Bessel function while suppressing signal components other than the specific signal component related to the specific high-order Bessel function, and a ratio of optical intensity between the carrier component and the specific signal component is set substantially to 1.
摘要翻译： 一种用于产生载波残留信号的方法及其装置，其中可以以简化的结构稳定地产生在光度场或光纤无线电通信场中使用的外差光信号。 该装置包括光调制单元，其包括产生具有特定波长的光波的光源和SSB光调制器。 从光源发射的光波进入光调制单元。 从光调制单元发射的光波包括与零阶贝塞尔函数相关的载波分量和与特定高阶贝塞尔函数有关的特定信号分量，同时抑制除了与特定高电平相关的特定信号分量之外的信号分量 并且Bessel函数和载波分量与特定信号分量之间的光强度比被设定为1。
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公开(公告)号：US07869668B2
公开(公告)日：2011-01-11
申请号：US10593661
申请日：2004-03-22
申请人： Yoshihiro Hashimoto , Kaoru Higuma , Junichiro Ichikawa , Shingo Mori , Yozo Shoji , Hiroyo Ogawa
发明人： Yoshihiro Hashimoto , Kaoru Higuma , Junichiro Ichikawa , Shingo Mori , Yozo Shoji , Hiroyo Ogawa
CPC分类号： H04B10/50575 , H04B10/25758 , H04B10/505 , H04B10/5053 , H04B10/50572 , H04B10/50577 , H04B10/5165
摘要： A method for generating a carrier residual signal and its device, in which a heterodyne optical signal used in a photometric field or an optical fiber radio communication field can be stably generated with a simplified structure. The device includes an optical modulating unit that includes a light source generating a light wave having a specific wavelength, and an SSB optical modulator. A light wave emitted from the light source enters into the optical modulating unit. A light wave emitted from the optical modulating unit includes a carrier component related to a zero-order Bessel function and a specific signal component related to a specific high-order Bessel function while suppressing signal components other than the specific signal component related to the specific high-order Bessel function, and a ratio of optical intensity between the carrier component and the specific signal component is set substantially to 1.
摘要翻译： 一种用于产生载波残留信号的方法及其装置，其中可以以简化的结构稳定地产生在光度场或光纤无线电通信场中使用的外差光信号。 该装置包括光调制单元，其包括产生具有特定波长的光波的光源和SSB光调制器。 从光源发射的光波进入光调制单元。 从光调制单元发射的光波包括与零阶贝塞尔函数相关的载波分量和与特定高阶贝塞尔函数有关的特定信号分量，同时抑制除了与特定高电平相关的特定信号分量之外的信号分量 并且Bessel函数和载波分量与特定信号分量之间的光强度比被设定为1。
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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。
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公开(公告)号：US07899338B2
公开(公告)日：2011-03-01
申请号：US10550770
申请日：2004-03-26
IPC分类号： H04B10/04 , H04B10/121
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） 低频信号叠加电路（2），用于将具有特定频率的低频信号fB叠加到施加到每个光调制部分的调制信号b上;光检测装置（9），用于感测光波强度的变化 通过组合部分，以及用于从光学感测装置中提取与低频信号相对应的光强变化的偏压控制装置（4），并根据提取的光强度变化对DC偏压施加装置进行控制 光。
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公开(公告)号：US06218658B1
公开(公告)日：2001-04-17
申请号：US09271302
申请日：1999-03-17
IPC分类号： H01J4014
CPC分类号： G02F1/3525 , G02B6/264 , G02B6/3845 , G02F1/35
摘要： The optical fuse of the present invention comprises: at least one light heatable portion for receiving an incident beam, and at least one thermally sensitive degradable portion with transparency and reflectivity, positioned in contact with the light heatable portion. The light heatable portion contains a light heatable material which generates heat depending on a specified light intensity of the incident beam. The thermally sensitive degradable portion contains a thermally sensitive degradable material which loses or reduces its transparency and reflectivity, depending on the heat generated by the light heatable portion when the light intensity of the incident beam exceeds a threshold value.
摘要翻译： 本发明的光熔丝包括：用于接收入射光束的至少一个光可加热部分和具有透明度和反射率的至少一个具有透光性和反射性的热敏可降解部分，与光可加热部分接触。 光可加热部分包含根据入射光束的规定光强度产生热量的轻质可加热材料。 热敏可降解部分包含热敏可降解材料，其当入射光束的光强度超过阈值时，根据由可热加热部分产生的热量而损失或降低其透明度和反射率。
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公开(公告)号：US20070019968A1
公开(公告)日：2007-01-25
申请号：US10550770
申请日：2004-03-26
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。
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公开(公告)号：US06539153B2
公开(公告)日：2003-03-25
申请号：US09817824
申请日：2001-03-26
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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