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。

公开(公告)号：US20050220385A1

公开(公告)日：2005-10-06

申请号：US11085609

申请日：2005-03-22

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Kaoru Higuma ,  Shingo Mori

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Kaoru Higuma ,  Shingo Mori

IPC分类号： G02F1/035 ,  G02F1/01 ,  G02F1/21 ,  G02F1/225 ,  G02F1/313

CPC分类号： G02F1/3136 ,  G02F1/0123 ,  G02F1/035 ,  G02F1/225 ,  G02F2001/212

摘要： An optical SSB modulator capable of appropriately adjusting a phase difference of light in the MZ waveguides and automatically adjusting a voltage impressed to the bias adjustment electrodes is provided. The above-mentioned object is achieved by an optical SSB modulator (1) provided with a first sub Mach-Zehnder waveguide (MZA) (2), a second sub Mach-Zehnder waveguide (MZB) (3), a main Mach-Zehnder waveguide (MZC) (4), a first bias adjustment electrode (DCA electrode) (5), a second bias adjustment electrode (DCB electrode) (6), a first modulation electrode (RFA electrode) (7), a second modulation electrode (RFB electrode) (8) and a third bias adjustment electrode (DCC electrode) (9), wherein either one of or both of output portions (10, 11) of the MZA and the MZB have an X-branching form, and specifically having one of light paths of the X-branching connected to a photodetector.

摘要翻译： 提供一种能够适当地调整MZ波导中的光的相位差并自动调节施加到偏置调节电极的电压的光学SSB调制器。 上述目的通过一种光学SSB调制器（1）来实现，所述光学SSB调制器（1）设置有第一子马赫 - 曾德尔波导（MZ）和第二子马赫 - 曾德尔波导（MZ＆lt; SUB＆amp; （3），主马赫 - 曾德尔波导（MZ）C（4），第一偏置调节电极（DCA电极）（ 5），第二偏置调整电极（DCB电极）（6），第一调制电极（RFA电极）（7），第二调制电极（RF B电极）（8）和第三偏置调整电极（DC电极）（9），其中，输出部分（10,11）中的任一个或两个 MZA A和MZ B B具有X分支形式，并且具体地将X分支的光路中的一个连接到光电检测器。

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。

公开(公告)号：US07239763B2

公开(公告)日：2007-07-03

申请号：US11085609

申请日：2005-03-22

申请人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Kaoru Higuma ,  Shingo Mori

发明人： Tetsuya Kawanishi ,  Masayuki Izutsu ,  Kaoru Higuma ,  Shingo Mori

IPC分类号： G02F1/225

CPC分类号： G02F1/3136 ,  G02F1/0123 ,  G02F1/035 ,  G02F1/225 ,  G02F2001/212

摘要： An optical SSB modulator capable of appropriately adjusting a phase difference of light in the MZ waveguides and automatically adjusting a voltage impressed to the bias adjustment electrodes is provided. The above-mentioned object is achieved by an optical SSB modulator (1) provided with a first sub Mach-Zehnder waveguide (MZA) (2), a second sub Mach-Zehnder waveguide (MZB) (3), a main Mach-Zehnder waveguide (MZC) (4), a first bias adjustment electrode (DCA electrode) (5), a second bias adjustment electrode (DCB electrode) (6), a first modulation electrode (RFA electrode) (7), a second modulation electrode (RFB electrode) (8) and a third bias adjustment electrode (DCC electrode) (9), wherein either one of or both of output portions (10, 11) of the MZA and the MZB have an X-branching form, and specifically having one of light paths of the X-branching connected to a photodetector.

摘要翻译： 提供一种能够适当地调整MZ波导中的光的相位差并自动调节施加到偏置调节电极的电压的光学SSB调制器。 上述目的通过一种光学SSB调制器（1）来实现，所述光学SSB调制器（1）设置有第一子马赫 - 曾德尔波导（MZ）和第二子马赫 - 曾德尔波导（MZ＆lt; SUB＆amp; （3），主马赫 - 曾德尔波导（MZ）C（4），第一偏置调节电极（DCA电极）（ 5），第二偏置调整电极（DCB电极）（6），第一调制电极（RFA电极）（7），第二调制电极（RF B电极）（8）和第三偏置调整电极（DC电极）（9），其中，输出部分（10,11）中的任一个或两个 MZA A和MZ B B具有X分支形式，并且具体地将X分支的光路中的一个连接到光电检测器。

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

IPC分类号： G02F1/01 ,  G02F1/035

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。

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。

公开(公告)号：US20060285787A1

公开(公告)日：2006-12-21

申请号：US11315615

申请日：2005-12-22

申请人： Toshio Sakane ,  Norikazu Miyazaki ,  Kaoru Higuma ,  Shingo Mori

发明人： Toshio Sakane ,  Norikazu Miyazaki ,  Kaoru Higuma ,  Shingo Mori

IPC分类号： G02F1/035

CPC分类号： G02F1/225 ,  G02F1/035 ,  G02F2001/212

摘要： An optical modulator which magnifies a modulation index and reduces affection of SBS by suppressing a light source carrier component in an equivalent light source spectral width and performs more long-distance transmission by suppressing one of sideband spectrums generated by a modulation signal to reduce affection of fiber dispersion, having a light branch means that branches input light having a carrier component into two light waves; a SSB modulation means that modulates one branched wave and generates a wave having the carrier component and one sideband spectrum; an intensity adjustment means that adjusts intensity of the carrier component of the other wave; a phase adjustment means that adjusts the phase of the carrier component with respect to at least one of the two waves; and a multiplexing means that multiplexes the two waves passing through the modulation means, and the intensity and phase adjustment means, and emits output light.

摘要翻译： 一种光调制器，其通过抑制等效光源光谱宽度中的光源载体分量来放大调制指数并降低SBS的影响，并且通过抑制由调制信号产生的边带频谱之一来执行更多的长距离传输，以减少光纤的影响 具有光分支的分散装置，其将具有载体分量的输入光分支成两个光波; SSB调制装置，其调制一个分支波并产生具有载波分量和一个边带频谱的波; 强度调节装置，其调整另一波的载波分量的强度; 相位调整装置，相对于两个波中的至少一个调整载波分量的相位; 以及多路复用装置，其将通过调制装置的两个波和强度和相位调节装置进行多路复用，并发射输出光。

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

IPC分类号： G02F2/00 ,  H01S4/00

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。

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

IPC分类号： H04B10/04 ,  H04B10/00

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。

公开(公告)号：US07302120B2

公开(公告)日：2007-11-27

申请号：US11315615

申请日：2005-12-22

申请人： Toshio Sakane ,  Norikazu Miyazaki ,  Kaoru Higuma ,  Shingo Mori

发明人： Toshio Sakane ,  Norikazu Miyazaki ,  Kaoru Higuma ,  Shingo Mori

IPC分类号： G02F1/035

CPC分类号： G02F1/225 ,  G02F1/035 ,  G02F2001/212

摘要： An optical modulator which magnifies a modulation index and reduces affection of SBS by suppressing a light source carrier component in an equivalent light source spectral width and performs more long-distance transmission by suppressing one of sideband spectrums generated by a modulation signal to reduce affection of fiber dispersion, having a light branch means that branches input light having a carrier component into two light waves; a SSB modulation means that modulates one branched wave and generates a wave having the carrier component and one sideband spectrum; an intensity adjustment means that adjusts intensity of the carrier component of the other wave; a phase adjustment means that adjusts the phase of the carrier component with respect to at least one of the two waves; and a multiplexing means that multiplexes the two waves passing through the modulation means, and the intensity and phase adjustment means, and emits output light.

摘要翻译： 一种光调制器，其通过抑制等效光源光谱宽度中的光源载体分量来放大调制指数并降低SBS的影响，并且通过抑制由调制信号产生的边带频谱之一来执行更多的长距离传输，以减少光纤的影响 具有光分支的分散装置，其将具有载体分量的输入光分支成两个光波; SSB调制装置，其调制一个分支波并产生具有载波分量和一个边带频谱的波; 强度调节装置，其调整另一波的载波分量的强度; 相位调整装置，相对于两个波中的至少一个调整载波分量的相位; 以及多路复用装置，其将通过调制装置的两个波和强度和相位调节装置进行多路复用，并发射输出光。